Ergonomically shaped charcoal grey school chair featuring a flame-retardant plastic shell and skid-base legs to protect classroom flooring.
Deep grey educational chair with an easy-grip handle hole and a robust tubular steel frame designed for rigorous daily school use.
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 Dark Grey Anti-Tilt Junior Seating

The Cobolt Dark Grey Size 3 Chair delivers a high-performance foundation for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is built to survive the high-frequency use and heavy-duty demands of a bustling Key Stage 2 classroom.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Accident Prevention Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Low-Maintenance Aesthetic: The non-porous charcoal shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

Junior Posture & Responsibility

  • Developmental Ergonomics: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position while keeping feet firmly planted.
  • Circular Economy Asset: Constructed from 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during tabletop learning.

Integrated Vandal Resistance

Junior classroom furniture must be resilient. We utilize heavy-duty, tamperproof fixings to lock the shell to the grey steel frame, eliminating the risk of students loosening parts and ensuring a safe, rattle-free experience.

The Cobolt Standard

  • Legacy of Excellence: With 50 years of experience as a trusted public sector partner, we deliver furniture that meets and exceeds UK educational compliance.
  • Transparent Logistics: We include UK Mainland shipping as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • Domestic Quality Control: UK manufacturing guarantees high-grade finishes, shortened lead times, and a significantly lower carbon footprint than imported alternatives.

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

The Dark Grey Size 3 School Chair is the primary specification for Year 3 and Year 4 Classrooms, Junior Libraries, After-School Clubs, and Community Learning Hubs. Its adult-strength frame combined with junior-specific dimensions makes it an incredibly versatile asset for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear frame inhibits students from rocking back, reducing classroom accidents.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both frame welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains manageable for staff to move and stack.
  • Grey Powder-Coated Steel – Slate-tone metallic finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy junior floor clearing and cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and the high-traffic school environment.
  • Tamperproof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Junior Schools

  • Sector Insight: With fifty years of history, we understand the specific durability and hygiene needs of UK primary education.
  • 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 learners, 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 Tamperproof 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 Dark Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the materials used to create this durable Key Stage 2 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 Years 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 students
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 Finish
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Origin
Manufactured in UK
Quality assurance and low carbon footprint

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: Sourcing Seating for UK Junior Schools

Q: Is "Size 3" correct for my Year 3 and Year 4 classrooms?

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 mechanism help in a junior classroom?

A: Junior students are often highly 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 accidents and related focus disruptions.

Q: Is Dark Grey a practical choice for a junior school?

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

Q: What is the maximum weight capacity for these Size 3 chairs?

A: Despite being dimensioned for junior students, the high-strength powder-coated steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use or evening community hires without structural risk.

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

A: Absolutely. We use industrial-grade tamperproof 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 fire and safety regulations?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for junior 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 is the benefit of the contoured outer ribbing?

A: The strategic ribbing on the back of the shell provides immense structural rigidity without adding significant weight. This ensures the seat back won't snap or lose its shape under the heavy daily pressure of a busy school.

Q: Why purchase from Cobolt Furniture?

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

Overview

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

The Cobolt Dark Grey Size 3 Chair delivers a high-performance foundation for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is built to survive the high-frequency use and heavy-duty demands of a bustling Key Stage 2 classroom.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Accident Prevention Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Low-Maintenance Aesthetic: The non-porous charcoal shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

Junior Posture & Responsibility

  • Developmental Ergonomics: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position while keeping feet firmly planted.
  • Circular Economy Asset: Constructed from 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during tabletop learning.

Integrated Vandal Resistance

Junior classroom furniture must be resilient. We utilize heavy-duty, tamperproof fixings to lock the shell to the grey steel frame, eliminating the risk of students loosening parts and ensuring a safe, rattle-free experience.

The Cobolt Standard

  • Legacy of Excellence: With 50 years of experience as a trusted public sector partner, we deliver furniture that meets and exceeds UK educational compliance.
  • Transparent Logistics: We include UK Mainland shipping as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • Domestic Quality Control: UK manufacturing guarantees high-grade finishes, shortened lead times, and a significantly lower carbon footprint than imported alternatives.

Features & Benefits

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

The Dark Grey Size 3 School Chair is the primary specification for Year 3 and Year 4 Classrooms, Junior Libraries, After-School Clubs, and Community Learning Hubs. Its adult-strength frame combined with junior-specific dimensions makes it an incredibly versatile asset for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear frame inhibits students from rocking back, reducing classroom accidents.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both frame welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains manageable for staff to move and stack.
  • Grey Powder-Coated Steel – Slate-tone metallic finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy junior floor clearing and cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and the high-traffic school environment.
  • Tamperproof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Junior Schools

  • Sector Insight: With fifty years of history, we understand the specific durability and hygiene needs of UK primary education.
  • 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 learners, 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 Tamperproof 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 Dark Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the materials used to create this durable Key Stage 2 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 Years 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 students
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 Finish
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Origin
Manufactured in UK
Quality assurance and low carbon footprint

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: Sourcing Seating for UK Junior Schools

Q: Is "Size 3" correct for my Year 3 and Year 4 classrooms?

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 mechanism help in a junior classroom?

A: Junior students are often highly 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 accidents and related focus disruptions.

Q: Is Dark Grey a practical choice for a junior school?

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

Q: What is the maximum weight capacity for these Size 3 chairs?

A: Despite being dimensioned for junior students, the high-strength powder-coated steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use or evening community hires without structural risk.

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

A: Absolutely. We use industrial-grade tamperproof 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 fire and safety regulations?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for junior 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 is the benefit of the contoured outer ribbing?

A: The strategic ribbing on the back of the shell provides immense structural rigidity without adding significant weight. This ensures the seat back won't snap or lose its shape under the heavy daily pressure of a busy school.

Q: Why purchase from Cobolt Furniture?

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

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

Product code: CH43DG
Transform your middle-primary learning zones with the Cobolt Dark Grey Classic Polypropylene School Chair (Size 3 / 6-8 Years). Engineered specificall...

Inc VAT

Exc VAT

£52.00

£43.33

Colours - Dark Grey
Age - 6-8 Years

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

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

The Cobolt Dark Grey Size 3 Chair delivers a high-performance foundation for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is built to survive the high-frequency use and heavy-duty demands of a bustling Key Stage 2 classroom.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Accident Prevention Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Low-Maintenance Aesthetic: The non-porous charcoal shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

Junior Posture & Responsibility

  • Developmental Ergonomics: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position while keeping feet firmly planted.
  • Circular Economy Asset: Constructed from 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during tabletop learning.

Integrated Vandal Resistance

Junior classroom furniture must be resilient. We utilize heavy-duty, tamperproof fixings to lock the shell to the grey steel frame, eliminating the risk of students loosening parts and ensuring a safe, rattle-free experience.

The Cobolt Standard

  • Legacy of Excellence: With 50 years of experience as a trusted public sector partner, we deliver furniture that meets and exceeds UK educational compliance.
  • Transparent Logistics: We include UK Mainland shipping as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • Domestic Quality Control: UK manufacturing guarantees high-grade finishes, shortened lead times, and a significantly lower carbon footprint than imported alternatives.

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

The Dark Grey Size 3 School Chair is the primary specification for Year 3 and Year 4 Classrooms, Junior Libraries, After-School Clubs, and Community Learning Hubs. Its adult-strength frame combined with junior-specific dimensions makes it an incredibly versatile asset for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear frame inhibits students from rocking back, reducing classroom accidents.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both frame welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains manageable for staff to move and stack.
  • Grey Powder-Coated Steel – Slate-tone metallic finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy junior floor clearing and cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and the high-traffic school environment.
  • Tamperproof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Junior Schools

  • Sector Insight: With fifty years of history, we understand the specific durability and hygiene needs of UK primary education.
  • 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 learners, 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 Tamperproof 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 Dark Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the materials used to create this durable Key Stage 2 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 Years 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 students
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 Finish
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Origin
Manufactured in UK
Quality assurance and low carbon footprint

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: Sourcing Seating for UK Junior Schools

Q: Is "Size 3" correct for my Year 3 and Year 4 classrooms?

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 mechanism help in a junior classroom?

A: Junior students are often highly 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 accidents and related focus disruptions.

Q: Is Dark Grey a practical choice for a junior school?

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

Q: What is the maximum weight capacity for these Size 3 chairs?

A: Despite being dimensioned for junior students, the high-strength powder-coated steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use or evening community hires without structural risk.

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

A: Absolutely. We use industrial-grade tamperproof 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 fire and safety regulations?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for junior 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 is the benefit of the contoured outer ribbing?

A: The strategic ribbing on the back of the shell provides immense structural rigidity without adding significant weight. This ensures the seat back won't snap or lose its shape under the heavy daily pressure of a busy school.

Q: Why purchase from Cobolt Furniture?

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

Overview

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

The Cobolt Dark Grey Size 3 Chair delivers a high-performance foundation for students aged 6 to 8 years. Dispatched with Free UK Mainland Delivery, it is built to survive the high-frequency use and heavy-duty demands of a bustling Key Stage 2 classroom.

The Cobolt Advantage

  • Fifteen-Year Financial Security: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Accident Prevention Engineering: The specialized anti-tilt legs act as a mechanical safeguard, shifting the balance point to prevent students from tipping over while seated.
  • Low-Maintenance Aesthetic: The non-porous charcoal shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

Junior Posture & Responsibility

  • Developmental Ergonomics: Adhering to Size 3 EN1729 standards, the 350mm seat height ensures junior students maintain a healthy lumbar position while keeping feet firmly planted.
  • Circular Economy Asset: Constructed from 100% recyclable polypropylene and steel, this chair can be fully repurposed at the end of its service life.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during tabletop learning.

Integrated Vandal Resistance

Junior classroom furniture must be resilient. We utilize heavy-duty, tamperproof fixings to lock the shell to the grey steel frame, eliminating the risk of students loosening parts and ensuring a safe, rattle-free experience.

The Cobolt Standard

  • Legacy of Excellence: With 50 years of experience as a trusted public sector partner, we deliver furniture that meets and exceeds UK educational compliance.
  • Transparent Logistics: We include UK Mainland shipping as standard, providing bursars and managers with a simple, all-inclusive price for classroom refits.
  • Domestic Quality Control: UK manufacturing guarantees high-grade finishes, shortened lead times, and a significantly lower carbon footprint than imported alternatives.

Features & Benefits

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

The Dark Grey Size 3 School Chair is the primary specification for Year 3 and Year 4 Classrooms, Junior Libraries, After-School Clubs, and Community Learning Hubs. Its adult-strength frame combined with junior-specific dimensions makes it an incredibly versatile asset for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear frame inhibits students from rocking back, reducing classroom accidents.
  • Size 3 (6-8 Years) – Precision-engineered 350mm seat height for the middle primary age group.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both frame welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains manageable for staff to move and stack.
  • Grey Powder-Coated Steel – Slate-tone metallic finish that resists scratches and heavy daily wear.
  • Stackable Design – Efficient vertical stacking allows for easy junior floor clearing and cleaning.
  • High-Impact Polypropylene – The shell is resistant to ink, school chemicals, and the high-traffic school environment.
  • Tamperproof Shell Fasteners – Secured fixings ensure the seat remains permanently and safely attached.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service: Partnering with UK Junior Schools

  • Sector Insight: With fifty years of history, we understand the specific durability and hygiene needs of UK primary education.
  • 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 learners, 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 Tamperproof 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 Dark Grey Anti-Tilt Chair combines certified junior ergonomics with an adult-strength safety frame. These specifications detail the materials used to create this durable Key Stage 2 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 Years 3 & 4
Seat Width
370mm
Precision sized for junior students
Seat Depth
300mm
Optimal thigh support for KS2 students
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 Finish
Slate Grey Powder Coated Steel
Scratch and vandal resistant finish
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Origin
Manufactured in UK
Quality assurance and low carbon footprint

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: Sourcing Seating for UK Junior Schools

Q: Is "Size 3" correct for my Year 3 and Year 4 classrooms?

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 mechanism help in a junior classroom?

A: Junior students are often highly 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 accidents and related focus disruptions.

Q: Is Dark Grey a practical choice for a junior school?

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

Q: What is the maximum weight capacity for these Size 3 chairs?

A: Despite being dimensioned for junior students, the high-strength powder-coated steel frame is rated for a massive 125kg. This ensures it is robust enough for occasional teacher use or evening community hires without structural risk.

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

A: Absolutely. We use industrial-grade tamperproof 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 fire and safety regulations?

A: Yes, it is fully compliant with BS EN1729 Parts 1 & 2, which are the specific standards for junior 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 is the benefit of the contoured outer ribbing?

A: The strategic ribbing on the back of the shell provides immense structural rigidity without adding significant weight. This ensures the seat back won't snap or lose its shape under the heavy daily pressure of a busy school.

Q: Why purchase from Cobolt Furniture?

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

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