Classic black polypropylene school chair with a durable grey steel frame, featuring an ergonomic seat shell for improved student posture in classrooms.
Black anti-tilt classroom chair showing angled rear legs for stability; BS EN1729 compliant and made from 100% recycled polypropylene for eco-friendly school furniture.
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 Black Anti-Tilt Junior Seating

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

The Cobolt Advantage

  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Junior Safety 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 obsidian shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

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.
  • Eco-Responsible Lifecycle: Constructed from 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 tabletop learning.

The Cobolt Standard

  • 50 Years of Expertise: As a trusted public sector partner for half a century, we deliver furniture that meets and exceeds the most rigorous UK educational benchmarks.
  • Free UK Mainland Delivery: We provide transparent, all-inclusive pricing by absorbing all shipping costs for your school refit project.
  • 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 Black Anti-Tilt Chair used?

The Black 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 – Robust 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK primary education.
  • Free UK Mainland Delivery: We manage the delivery of school orders at no extra cost, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Dedicated 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 active 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 Black 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
Purpose / Benefit
Seat Height
350mm
Standard Size 3 for Years 3 & 4
Seat Width
370mm
Precision sized for junior 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
Vandal and scratch resistant finish
Weight Capacity
125kg (19.6 stone)
Exceptional structural strength
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: Junior Classroom Seating Solutions

Q: Is a "Size 3" chair correct for my Year 3 and Year 4 students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures 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 actually 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, thereby preventing falls and injuries.

Q: Is Obsidian Black a practical colour for a primary classroom?

A: Yes. Black provides a sophisticated aesthetic that reduces visual noise. The polypropylene is completely non-porous and resistant to ink and common school chemicals, allowing for instant sanitisation.

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 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, ensuring students cannot loosen the fixings and that the chairs remain a permanent, safe asset.

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. Their lightweight 3.5kg build makes them easy to move for reconfiguration.

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 UK school furniture regarding ergonomics, strength, and structural durability.

Q: Why purchase from Cobolt Furniture?

A: With 50 years of expertise, we are a trusted partner to UK education. We offer Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the UK curriculum.

Overview

Product Overview: Size 3 Black Anti-Tilt Junior Seating

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

The Cobolt Advantage

  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Junior Safety 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 obsidian shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

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.
  • Eco-Responsible Lifecycle: Constructed from 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 tabletop learning.

The Cobolt Standard

  • 50 Years of Expertise: As a trusted public sector partner for half a century, we deliver furniture that meets and exceeds the most rigorous UK educational benchmarks.
  • Free UK Mainland Delivery: We provide transparent, all-inclusive pricing by absorbing all shipping costs for your school refit project.
  • 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 Black Anti-Tilt Chair used?

The Black 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 – Robust 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK primary education.
  • Free UK Mainland Delivery: We manage the delivery of school orders at no extra cost, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Dedicated 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 active 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 Black 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
Purpose / Benefit
Seat Height
350mm
Standard Size 3 for Years 3 & 4
Seat Width
370mm
Precision sized for junior 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
Vandal and scratch resistant finish
Weight Capacity
125kg (19.6 stone)
Exceptional structural strength
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: Junior Classroom Seating Solutions

Q: Is a "Size 3" chair correct for my Year 3 and Year 4 students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures 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 actually 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, thereby preventing falls and injuries.

Q: Is Obsidian Black a practical colour for a primary classroom?

A: Yes. Black provides a sophisticated aesthetic that reduces visual noise. The polypropylene is completely non-porous and resistant to ink and common school chemicals, allowing for instant sanitisation.

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 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, ensuring students cannot loosen the fixings and that the chairs remain a permanent, safe asset.

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. Their lightweight 3.5kg build makes them easy to move for reconfiguration.

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 UK school furniture regarding ergonomics, strength, and structural durability.

Q: Why purchase from Cobolt Furniture?

A: With 50 years of expertise, we are a trusted partner to UK education. We offer Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the UK curriculum.

Black Classic Polypropylene Anti-Tilt School Chair - Size 3 - 6-8 Years

Product code: CH43BK
Transform your middle-primary learning zones with the Cobolt Obsidian Polypropylene Anti-Tilt Chair (Size 3 / 6-8 Years). Specifically produced for st...

Inc VAT

Exc VAT

£52.00

£43.33

Colours - Black
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 Black Anti-Tilt Junior Seating

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

The Cobolt Advantage

  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Junior Safety 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 obsidian shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

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.
  • Eco-Responsible Lifecycle: Constructed from 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 tabletop learning.

The Cobolt Standard

  • 50 Years of Expertise: As a trusted public sector partner for half a century, we deliver furniture that meets and exceeds the most rigorous UK educational benchmarks.
  • Free UK Mainland Delivery: We provide transparent, all-inclusive pricing by absorbing all shipping costs for your school refit project.
  • 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 Black Anti-Tilt Chair used?

The Black 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 – Robust 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK primary education.
  • Free UK Mainland Delivery: We manage the delivery of school orders at no extra cost, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Dedicated 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 active 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 Black 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
Purpose / Benefit
Seat Height
350mm
Standard Size 3 for Years 3 & 4
Seat Width
370mm
Precision sized for junior 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
Vandal and scratch resistant finish
Weight Capacity
125kg (19.6 stone)
Exceptional structural strength
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: Junior Classroom Seating Solutions

Q: Is a "Size 3" chair correct for my Year 3 and Year 4 students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures 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 actually 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, thereby preventing falls and injuries.

Q: Is Obsidian Black a practical colour for a primary classroom?

A: Yes. Black provides a sophisticated aesthetic that reduces visual noise. The polypropylene is completely non-porous and resistant to ink and common school chemicals, allowing for instant sanitisation.

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 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, ensuring students cannot loosen the fixings and that the chairs remain a permanent, safe asset.

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. Their lightweight 3.5kg build makes them easy to move for reconfiguration.

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 UK school furniture regarding ergonomics, strength, and structural durability.

Q: Why purchase from Cobolt Furniture?

A: With 50 years of expertise, we are a trusted partner to UK education. We offer Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the UK curriculum.

Overview

Product Overview: Size 3 Black Anti-Tilt Junior Seating

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

The Cobolt Advantage

  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled budget protection, ensuring your furniture remains a one-time capital investment for over a decade.
  • Junior Safety 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 obsidian shell resists staining and allows staff to maintain clinical standards with a simple wipe-down procedure.

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.
  • Eco-Responsible Lifecycle: Constructed from 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 tabletop learning.

The Cobolt Standard

  • 50 Years of Expertise: As a trusted public sector partner for half a century, we deliver furniture that meets and exceeds the most rigorous UK educational benchmarks.
  • Free UK Mainland Delivery: We provide transparent, all-inclusive pricing by absorbing all shipping costs for your school refit project.
  • 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 Black Anti-Tilt Chair used?

The Black 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 – Robust 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK primary education.
  • Free UK Mainland Delivery: We manage the delivery of school orders at no extra cost, ensuring your project remains within its allocated budget.
  • Sustainability Goals: Our domestic manufacturing and 100% recyclable materials support your institution's carbon reduction targets.
  • Dedicated 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 active 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 Black 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
Purpose / Benefit
Seat Height
350mm
Standard Size 3 for Years 3 & 4
Seat Width
370mm
Precision sized for junior 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
Vandal and scratch resistant finish
Weight Capacity
125kg (19.6 stone)
Exceptional structural strength
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: Junior Classroom Seating Solutions

Q: Is a "Size 3" chair correct for my Year 3 and Year 4 students?

A: Size 3 (350mm seat height) is the ergonomic standard for children aged 6 to 8 years. It ensures 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 actually 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, thereby preventing falls and injuries.

Q: Is Obsidian Black a practical colour for a primary classroom?

A: Yes. Black provides a sophisticated aesthetic that reduces visual noise. The polypropylene is completely non-porous and resistant to ink and common school chemicals, allowing for instant sanitisation.

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 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, ensuring students cannot loosen the fixings and that the chairs remain a permanent, safe asset.

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. Their lightweight 3.5kg build makes them easy to move for reconfiguration.

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 UK school furniture regarding ergonomics, strength, and structural durability.

Q: Why purchase from Cobolt Furniture?

A: With 50 years of expertise, we are a trusted partner to UK education. We offer Free UK Mainland Delivery, expert product knowledge, and furniture built specifically for the UK curriculum.

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