Commercial-grade light grey classroom chair with a one-piece molded seat and anti-tilt leg architecture, ideal for modern secondary school environments.
Neutral grey student seating featuring a tamper-resistant fixings design and a sleek profile, fully tested for heavy-use educational stability.
Size chart showing school chair dimensions by age group, including height, seat depth, and weight for children aged 3 to 14+ years. Ideal for selecting age-appropriate classroom seating.

Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Size 3 Light Grey Anti-Tilt Junior Seating

The Cobolt Light Grey Size 3 Chair is the ideal seating solution for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the daily pressures of the modern junior classroom—constant movement, heavy use, and the high-traffic demands of Key Stage 2 learning.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty ensures your school's capital expenditure is protected against manufacturing defects for over a decade.
  • Proactive Safety Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Estates-Friendly Maintenance: The grey powder-coated steel frame is scratch-resistant, ensuring the furniture retains its professional appearance even after years of daily use and cleaning.

Ergonomics & Sustainability

  • Junior Posture Support: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position during tabletop work.
  • Circular Economy Asset: Proudly UK-manufactured using 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Circulation: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during double periods or assembly.

Secure & Tamper-Proof

Classroom assets must be resilient to interference. We employ heavy-duty, tamper-proof fixings to lock the shell to the grey steel legs, ensuring a safe, stable, and vibration-free seating unit for the lifetime of the product.

The Cobolt Standard

  • Five Decades of Trust: With 50 years of experience as a public sector partner, we deliver products that meet and exceed rigorous UK educational benchmarks.
  • Transparent Procurement: We include UK Mainland delivery as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • UK-Centric Supply: Domestically manufactured to ensure high-grade quality control, shortened lead times, and a significantly lower carbon footprint than imported furniture.

Where is this Size 3 Light Grey Anti-Tilt Chair used?

The Light Grey Size 3 School Chair is the standard specification for Year 3 and Year 4 Classrooms, Junior Learning Hubs, Primary School Libraries, and After-School Clubs. Its adult-strength weight rating combined with junior-specific dimensions makes it an incredibly versatile asset for a range of educational and community settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively inhibit students from tipping backwards on two legs.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering the frame welds and plastic shell integrity.
  • 125kg Weight Limit – Exceptional build quality that safely supports students and occasional teacher use.
  • Grey Powder-Coated Steel – High-grade slate finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and daily classroom abuse.
  • Tamper-Proof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached to the frame.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Primary Schools

  • Education Sector Insight: With fifty years of heritage, we understand the specific durability and hygiene needs of UK schools.
  • Direct Logistics: We provide free UK Mainland shipping for school orders, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Reliable Support: Our UK-based team is available to help bursars and estates managers select the correct sizing for their specific demographics.

Safety Engineering. Guaranteed Performance.

  • The Anti-Tilt rear geometry is a crucial design feature for junior students, shifting the balance point to proactively prevent dangerous "chair swinging" habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (350mm) is perfectly scaled for the 6-8 year old stature, promoting healthy spinal alignment.
  • The Waterfall Seat Front eliminates hard edges behind the knees, maintaining healthy circulation during extended seated learning or tabletop activities.
  • Industrial-grade Tamper-Proof fasteners provide a permanent, rattle-free connection between the polypropylene seat and the powder-coated grey legs.
  • Every unit is backed by a 15-year manufacturer's guarantee, covering structural frame integrity and shell defects for long-term reliability.

The Size 3 Light Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the UK-manufactured materials used to create this durable classroom asset.

Target Ages
6-8 Years (Size 3)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
350mm
Standard Size 3 for Year 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 learners
Total Dimensions
670mm(H) x 410mm(W) x 470mm(D)
Balanced classroom footprint
Unit Weight
3.5kg
Robust yet easy to move for staff
Frame Material
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Parts 1 & 2
Safety & ergonomics certified
Sustainability
100% Recyclable
Environmentally ethical lifecycle

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

FAQs: Junior Classroom Seating Advice

Q: Is "Size 3" correct for my junior students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures that junior students can sit with a flat-footed stance, which is essential for maintaining correct sitting habits during Key Stage 2.

Q: How does the "Anti-Tilt" frame improve classroom safety?

A: Junior students are often active and prone to rocking on their chairs. The angled rear frame shifts the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively prevents falls and related injuries.

Q: Is Light Grey a practical colour for a junior classroom?

A: Yes. Light Grey provides a sophisticated, modern aesthetic that reduces visual overstimulation. The polypropylene shell is completely non-porous and resistant to ink and chemicals, allowing for instant sanitisation with standard anti-bacterial cleaners.

Q: What is the maximum weight capacity for these chairs?

A: Despite being dimensioned for junior students, the high-strength slate-grey steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use and evening community hires without the risk of buckling.

Q: Are the seats tamper-proof to prevent interference?

A: Absolutely. We use industrial-grade tamper-proof fasteners to secure the shell to the grey steel legs. This ensures students cannot loosen the fixings and that the chairs remain a permanent, safe asset in your school.

Q: Does this chair comply with BS EN1729?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for school furniture regarding ergonomics, strength, and structural durability.

Q: How easy are these chairs to store during cleaning?

A: These chairs are designed for vertical stacking, allowing cleaning staff to clear floor space efficiently after the school day ends. Their lightweight 3.5kg build makes them easy to move.

Q: What does the 15-year warranty cover?

A: Our 15-year guarantee covers any structural failure of the welded steel frame and any manufacturing defects in the polypropylene shell. It provides your primary school with a definitive long-term seating solution.

Q: Why purchase from Cobolt Furniture?

A: We are a UK-based manufacturer with over 50 years of experience supplying schools. We provide Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the demands of the UK junior curriculum.

Overview

Product Overview: Size 3 Light Grey Anti-Tilt Junior Seating

The Cobolt Light Grey Size 3 Chair is the ideal seating solution for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the daily pressures of the modern junior classroom—constant movement, heavy use, and the high-traffic demands of Key Stage 2 learning.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty ensures your school's capital expenditure is protected against manufacturing defects for over a decade.
  • Proactive Safety Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Estates-Friendly Maintenance: The grey powder-coated steel frame is scratch-resistant, ensuring the furniture retains its professional appearance even after years of daily use and cleaning.

Ergonomics & Sustainability

  • Junior Posture Support: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position during tabletop work.
  • Circular Economy Asset: Proudly UK-manufactured using 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Circulation: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during double periods or assembly.

Secure & Tamper-Proof

Classroom assets must be resilient to interference. We employ heavy-duty, tamper-proof fixings to lock the shell to the grey steel legs, ensuring a safe, stable, and vibration-free seating unit for the lifetime of the product.

The Cobolt Standard

  • Five Decades of Trust: With 50 years of experience as a public sector partner, we deliver products that meet and exceed rigorous UK educational benchmarks.
  • Transparent Procurement: We include UK Mainland delivery as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • UK-Centric Supply: Domestically manufactured to ensure high-grade quality control, shortened lead times, and a significantly lower carbon footprint than imported furniture.

Features & Benefits

Where is this Size 3 Light Grey Anti-Tilt Chair used?

The Light Grey Size 3 School Chair is the standard specification for Year 3 and Year 4 Classrooms, Junior Learning Hubs, Primary School Libraries, and After-School Clubs. Its adult-strength weight rating combined with junior-specific dimensions makes it an incredibly versatile asset for a range of educational and community settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively inhibit students from tipping backwards on two legs.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering the frame welds and plastic shell integrity.
  • 125kg Weight Limit – Exceptional build quality that safely supports students and occasional teacher use.
  • Grey Powder-Coated Steel – High-grade slate finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and daily classroom abuse.
  • Tamper-Proof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached to the frame.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Primary Schools

  • Education Sector Insight: With fifty years of heritage, we understand the specific durability and hygiene needs of UK schools.
  • Direct Logistics: We provide free UK Mainland shipping for school orders, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Reliable Support: Our UK-based team is available to help bursars and estates managers select the correct sizing for their specific demographics.

Safety & Warranty

Safety Engineering. Guaranteed Performance.

  • The Anti-Tilt rear geometry is a crucial design feature for junior students, shifting the balance point to proactively prevent dangerous "chair swinging" habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (350mm) is perfectly scaled for the 6-8 year old stature, promoting healthy spinal alignment.
  • The Waterfall Seat Front eliminates hard edges behind the knees, maintaining healthy circulation during extended seated learning or tabletop activities.
  • Industrial-grade Tamper-Proof fasteners provide a permanent, rattle-free connection between the polypropylene seat and the powder-coated grey legs.
  • Every unit is backed by a 15-year manufacturer's guarantee, covering structural frame integrity and shell defects for long-term reliability.

Specification Dimensions

The Size 3 Light Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the UK-manufactured materials used to create this durable classroom asset.

Target Ages
6-8 Years (Size 3)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
350mm
Standard Size 3 for Year 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 learners
Total Dimensions
670mm(H) x 410mm(W) x 470mm(D)
Balanced classroom footprint
Unit Weight
3.5kg
Robust yet easy to move for staff
Frame Material
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Parts 1 & 2
Safety & ergonomics certified
Sustainability
100% Recyclable
Environmentally ethical lifecycle

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Product FAQs

FAQs: Junior Classroom Seating Advice

Q: Is "Size 3" correct for my junior students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures that junior students can sit with a flat-footed stance, which is essential for maintaining correct sitting habits during Key Stage 2.

Q: How does the "Anti-Tilt" frame improve classroom safety?

A: Junior students are often active and prone to rocking on their chairs. The angled rear frame shifts the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively prevents falls and related injuries.

Q: Is Light Grey a practical colour for a junior classroom?

A: Yes. Light Grey provides a sophisticated, modern aesthetic that reduces visual overstimulation. The polypropylene shell is completely non-porous and resistant to ink and chemicals, allowing for instant sanitisation with standard anti-bacterial cleaners.

Q: What is the maximum weight capacity for these chairs?

A: Despite being dimensioned for junior students, the high-strength slate-grey steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use and evening community hires without the risk of buckling.

Q: Are the seats tamper-proof to prevent interference?

A: Absolutely. We use industrial-grade tamper-proof fasteners to secure the shell to the grey steel legs. This ensures students cannot loosen the fixings and that the chairs remain a permanent, safe asset in your school.

Q: Does this chair comply with BS EN1729?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for school furniture regarding ergonomics, strength, and structural durability.

Q: How easy are these chairs to store during cleaning?

A: These chairs are designed for vertical stacking, allowing cleaning staff to clear floor space efficiently after the school day ends. Their lightweight 3.5kg build makes them easy to move.

Q: What does the 15-year warranty cover?

A: Our 15-year guarantee covers any structural failure of the welded steel frame and any manufacturing defects in the polypropylene shell. It provides your primary school with a definitive long-term seating solution.

Q: Why purchase from Cobolt Furniture?

A: We are a UK-based manufacturer with over 50 years of experience supplying schools. We provide Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the demands of the UK junior curriculum.

Light Grey Classic Polypropylene Anti-Tilt School Chair - Grey Legs - Size 3

Product code: CH43GY
Equip your junior learning environments with the Cobolt Light Grey Classic Polypropylene School Chair (Size 3 / 6-8 Years). Precision-sized for studen...

Inc VAT

Exc VAT

£52.00

£43.33

Colours - Light Grey
Age - 6-8 Years

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Trusted UK Supplier 50 years. Established. Reliable.

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Size 3 Light Grey Anti-Tilt Junior Seating

The Cobolt Light Grey Size 3 Chair is the ideal seating solution for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the daily pressures of the modern junior classroom—constant movement, heavy use, and the high-traffic demands of Key Stage 2 learning.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty ensures your school's capital expenditure is protected against manufacturing defects for over a decade.
  • Proactive Safety Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Estates-Friendly Maintenance: The grey powder-coated steel frame is scratch-resistant, ensuring the furniture retains its professional appearance even after years of daily use and cleaning.

Ergonomics & Sustainability

  • Junior Posture Support: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position during tabletop work.
  • Circular Economy Asset: Proudly UK-manufactured using 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Circulation: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during double periods or assembly.

Secure & Tamper-Proof

Classroom assets must be resilient to interference. We employ heavy-duty, tamper-proof fixings to lock the shell to the grey steel legs, ensuring a safe, stable, and vibration-free seating unit for the lifetime of the product.

The Cobolt Standard

  • Five Decades of Trust: With 50 years of experience as a public sector partner, we deliver products that meet and exceed rigorous UK educational benchmarks.
  • Transparent Procurement: We include UK Mainland delivery as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • UK-Centric Supply: Domestically manufactured to ensure high-grade quality control, shortened lead times, and a significantly lower carbon footprint than imported furniture.

Where is this Size 3 Light Grey Anti-Tilt Chair used?

The Light Grey Size 3 School Chair is the standard specification for Year 3 and Year 4 Classrooms, Junior Learning Hubs, Primary School Libraries, and After-School Clubs. Its adult-strength weight rating combined with junior-specific dimensions makes it an incredibly versatile asset for a range of educational and community settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively inhibit students from tipping backwards on two legs.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering the frame welds and plastic shell integrity.
  • 125kg Weight Limit – Exceptional build quality that safely supports students and occasional teacher use.
  • Grey Powder-Coated Steel – High-grade slate finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and daily classroom abuse.
  • Tamper-Proof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached to the frame.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Primary Schools

  • Education Sector Insight: With fifty years of heritage, we understand the specific durability and hygiene needs of UK schools.
  • Direct Logistics: We provide free UK Mainland shipping for school orders, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Reliable Support: Our UK-based team is available to help bursars and estates managers select the correct sizing for their specific demographics.

Safety Engineering. Guaranteed Performance.

  • The Anti-Tilt rear geometry is a crucial design feature for junior students, shifting the balance point to proactively prevent dangerous "chair swinging" habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (350mm) is perfectly scaled for the 6-8 year old stature, promoting healthy spinal alignment.
  • The Waterfall Seat Front eliminates hard edges behind the knees, maintaining healthy circulation during extended seated learning or tabletop activities.
  • Industrial-grade Tamper-Proof fasteners provide a permanent, rattle-free connection between the polypropylene seat and the powder-coated grey legs.
  • Every unit is backed by a 15-year manufacturer's guarantee, covering structural frame integrity and shell defects for long-term reliability.

The Size 3 Light Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the UK-manufactured materials used to create this durable classroom asset.

Target Ages
6-8 Years (Size 3)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
350mm
Standard Size 3 for Year 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 learners
Total Dimensions
670mm(H) x 410mm(W) x 470mm(D)
Balanced classroom footprint
Unit Weight
3.5kg
Robust yet easy to move for staff
Frame Material
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Parts 1 & 2
Safety & ergonomics certified
Sustainability
100% Recyclable
Environmentally ethical lifecycle

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

FAQs: Junior Classroom Seating Advice

Q: Is "Size 3" correct for my junior students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures that junior students can sit with a flat-footed stance, which is essential for maintaining correct sitting habits during Key Stage 2.

Q: How does the "Anti-Tilt" frame improve classroom safety?

A: Junior students are often active and prone to rocking on their chairs. The angled rear frame shifts the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively prevents falls and related injuries.

Q: Is Light Grey a practical colour for a junior classroom?

A: Yes. Light Grey provides a sophisticated, modern aesthetic that reduces visual overstimulation. The polypropylene shell is completely non-porous and resistant to ink and chemicals, allowing for instant sanitisation with standard anti-bacterial cleaners.

Q: What is the maximum weight capacity for these chairs?

A: Despite being dimensioned for junior students, the high-strength slate-grey steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use and evening community hires without the risk of buckling.

Q: Are the seats tamper-proof to prevent interference?

A: Absolutely. We use industrial-grade tamper-proof fasteners to secure the shell to the grey steel legs. This ensures students cannot loosen the fixings and that the chairs remain a permanent, safe asset in your school.

Q: Does this chair comply with BS EN1729?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for school furniture regarding ergonomics, strength, and structural durability.

Q: How easy are these chairs to store during cleaning?

A: These chairs are designed for vertical stacking, allowing cleaning staff to clear floor space efficiently after the school day ends. Their lightweight 3.5kg build makes them easy to move.

Q: What does the 15-year warranty cover?

A: Our 15-year guarantee covers any structural failure of the welded steel frame and any manufacturing defects in the polypropylene shell. It provides your primary school with a definitive long-term seating solution.

Q: Why purchase from Cobolt Furniture?

A: We are a UK-based manufacturer with over 50 years of experience supplying schools. We provide Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the demands of the UK junior curriculum.

Overview

Product Overview: Size 3 Light Grey Anti-Tilt Junior Seating

The Cobolt Light Grey Size 3 Chair is the ideal seating solution for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the daily pressures of the modern junior classroom—constant movement, heavy use, and the high-traffic demands of Key Stage 2 learning.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty ensures your school's capital expenditure is protected against manufacturing defects for over a decade.
  • Proactive Safety Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Estates-Friendly Maintenance: The grey powder-coated steel frame is scratch-resistant, ensuring the furniture retains its professional appearance even after years of daily use and cleaning.

Ergonomics & Sustainability

  • Junior Posture Support: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position during tabletop work.
  • Circular Economy Asset: Proudly UK-manufactured using 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Circulation: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during double periods or assembly.

Secure & Tamper-Proof

Classroom assets must be resilient to interference. We employ heavy-duty, tamper-proof fixings to lock the shell to the grey steel legs, ensuring a safe, stable, and vibration-free seating unit for the lifetime of the product.

The Cobolt Standard

  • Five Decades of Trust: With 50 years of experience as a public sector partner, we deliver products that meet and exceed rigorous UK educational benchmarks.
  • Transparent Procurement: We include UK Mainland delivery as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • UK-Centric Supply: Domestically manufactured to ensure high-grade quality control, shortened lead times, and a significantly lower carbon footprint than imported furniture.

Features & Benefits

Where is this Size 3 Light Grey Anti-Tilt Chair used?

The Light Grey Size 3 School Chair is the standard specification for Year 3 and Year 4 Classrooms, Junior Learning Hubs, Primary School Libraries, and After-School Clubs. Its adult-strength weight rating combined with junior-specific dimensions makes it an incredibly versatile asset for a range of educational and community settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively inhibit students from tipping backwards on two legs.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering the frame welds and plastic shell integrity.
  • 125kg Weight Limit – Exceptional build quality that safely supports students and occasional teacher use.
  • Grey Powder-Coated Steel – High-grade slate finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and daily classroom abuse.
  • Tamper-Proof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached to the frame.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Primary Schools

  • Education Sector Insight: With fifty years of heritage, we understand the specific durability and hygiene needs of UK schools.
  • Direct Logistics: We provide free UK Mainland shipping for school orders, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Reliable Support: Our UK-based team is available to help bursars and estates managers select the correct sizing for their specific demographics.

Safety & Warranty

Safety Engineering. Guaranteed Performance.

  • The Anti-Tilt rear geometry is a crucial design feature for junior students, shifting the balance point to proactively prevent dangerous "chair swinging" habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (350mm) is perfectly scaled for the 6-8 year old stature, promoting healthy spinal alignment.
  • The Waterfall Seat Front eliminates hard edges behind the knees, maintaining healthy circulation during extended seated learning or tabletop activities.
  • Industrial-grade Tamper-Proof fasteners provide a permanent, rattle-free connection between the polypropylene seat and the powder-coated grey legs.
  • Every unit is backed by a 15-year manufacturer's guarantee, covering structural frame integrity and shell defects for long-term reliability.

Specification Dimensions

The Size 3 Light Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the UK-manufactured materials used to create this durable classroom asset.

Target Ages
6-8 Years (Size 3)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
350mm
Standard Size 3 for Year 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 learners
Total Dimensions
670mm(H) x 410mm(W) x 470mm(D)
Balanced classroom footprint
Unit Weight
3.5kg
Robust yet easy to move for staff
Frame Material
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Parts 1 & 2
Safety & ergonomics certified
Sustainability
100% Recyclable
Environmentally ethical lifecycle

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Product FAQs

FAQs: Junior Classroom Seating Advice

Q: Is "Size 3" correct for my junior students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures that junior students can sit with a flat-footed stance, which is essential for maintaining correct sitting habits during Key Stage 2.

Q: How does the "Anti-Tilt" frame improve classroom safety?

A: Junior students are often active and prone to rocking on their chairs. The angled rear frame shifts the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively prevents falls and related injuries.

Q: Is Light Grey a practical colour for a junior classroom?

A: Yes. Light Grey provides a sophisticated, modern aesthetic that reduces visual overstimulation. The polypropylene shell is completely non-porous and resistant to ink and chemicals, allowing for instant sanitisation with standard anti-bacterial cleaners.

Q: What is the maximum weight capacity for these chairs?

A: Despite being dimensioned for junior students, the high-strength slate-grey steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use and evening community hires without the risk of buckling.

Q: Are the seats tamper-proof to prevent interference?

A: Absolutely. We use industrial-grade tamper-proof fasteners to secure the shell to the grey steel legs. This ensures students cannot loosen the fixings and that the chairs remain a permanent, safe asset in your school.

Q: Does this chair comply with BS EN1729?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for school furniture regarding ergonomics, strength, and structural durability.

Q: How easy are these chairs to store during cleaning?

A: These chairs are designed for vertical stacking, allowing cleaning staff to clear floor space efficiently after the school day ends. Their lightweight 3.5kg build makes them easy to move.

Q: What does the 15-year warranty cover?

A: Our 15-year guarantee covers any structural failure of the welded steel frame and any manufacturing defects in the polypropylene shell. It provides your primary school with a definitive long-term seating solution.

Q: Why purchase from Cobolt Furniture?

A: We are a UK-based manufacturer with over 50 years of experience supplying schools. We provide Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the demands of the UK junior curriculum.

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