A dark green ergonomic school chair with a stain-resistant polypropylene shell and a sturdy grey frame built for high-use educational environments.
Vibrant emerald green classroom seat featuring non-marking floor glides and a safety-focused leg design to ensure student stability during lessons.
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 4 Green Anti-Tilt Senior Primary Seating

The Cobolt Green Size 4 Chair provides a durable, adult-strength foundation for students aged 8 to 11 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the high-frequency cleaning and constant movement required in busy Year 5 and 6 environments.

Upper Primary Posture & Sustainability

  • KS2 Ergonomic Standards: Adhering to Size 4 EN1729 regulations, the 380mm seat height ensures senior primary students maintain a healthy lumbar position while keeping feet firmly planted.
  • Eco-Responsible Lifecycle: Constructed from 100% recyclable polypropylene and steel, this chair supports your institution's carbon reduction targets through its domestic manufacturing.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during long tabletop learning sessions.

Institutional Resilience

  • Vandal-Resistant Fixings: We utilize industrial-grade, tamperproof fasteners to lock the shell to the grey steel frame, ensuring a permanent, safe connection.
  • Stain-Resistant Surface: The non-porous emerald shell resists ink, juice spills, and school chemicals, allowing for instant sanitisation with standard cleaners.
  • Stackable Design: Efficient vertical stacking allows for easy classroom reconfiguration and floor clearing for cleaning.

The Cobolt Standard

  • 50 Years of Manufacturing Heritage: As a trusted public sector partner for half a century, we deliver school furniture that meets and exceeds the most rigorous UK safety benchmarks.
  • Free UK Mainland Delivery: We simplify procurement by absorbing all shipping costs, ensuring your classroom refit project remains strictly on budget.
  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled asset protection, covering frame welds and plastic shell integrity for over a decade.

Where is this Size 4 Green Anti-Tilt Chair utilised?

The Green Size 4 School Chair is the primary specification for Year 5 and Year 6 Classrooms, Junior Libraries, Science Zones, and After-School Study Hubs. Its robust frame combined with senior-primary dimensions makes it a versatile solution for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear legs proactively inhibit students from rocking back, reducing senior primary classroom accidents.
  • Size 4 (8-11 Years) – Precision-engineered 380mm seat height for the upper primary age demographic.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both the welded steel frame and the high-impact shell.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains light enough for staff to move and stack.
  • Slate Grey Powder-Coating – A high-quality metallic finish that resists scratches, scuffs, and heavy daily wear.
  • 125kg Load Capacity – Superior structural resilience that safely supports students and adult staff alike.
  • UK Manufactured – Proudly produced in Britain to exceed the most rigorous educational standards.
  • Tamperproof 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK senior primary education.
  • Free UK Mainland Delivery: We manage the delivery of classroom refits at no extra cost, keeping your project within allocated budgets.
  • 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.

Senior Primary Safety. Guaranteed Reliability.

  • The Anti-Tilt rear geometry is a crucial design feature for older primary students, shifting the balance point to proactively prevent dangerous tipping habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (380mm) is perfectly scaled for the 8-11 year old stature, promoting healthy spinal habits.
  • 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 4 Green Anti-Tilt Chair combines certified senior primary ergonomics with a heavy-duty safety frame. These specifications detail the materials and dimensions that make it the responsible choice for Year 5 and Year 6 classrooms.

Target Ages
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
380mm
Standard Size 4 for upper primary students
Seat Dimensions
370mm (W) x 300mm (D)
Precision sized for Key Stage 2
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable 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
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety

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: Senior Primary Classroom Seating

Q: Is a "Size 4" chair correct for my Year 5 and Year 6 students?

A: Size 4 (380mm seat height) is the ergonomic standard for children aged 8 to 11 years. It ensures that students can sit with a flat-footed stance, essential for maintaining correct sitting habits during the final stages of Key Stage 2.

Q: How does the "Anti-Tilt" mechanism prevent falls?

A: Older primary students are often more active and prone to rocking on their chairs. The angled rear frame shifts the leverage point further back, making it mechanically difficult for the chair to tip backwards, thereby proactively preventing accidents.

Q: Is the Emerald Green shell resistant to school supplies?

A: Yes. The high-grade polypropylene is non-porous. Spills from ink, juice, or paints cannot penetrate the surface and can be wiped away easily without leaving residues or fading the vivid green colour.

Q: Can adults safely sit on these Size 4 chairs?

A: Yes. Despite being dimensioned for students, the powder-coated steel frame is rated for a massive 125kg. This makes it perfectly safe for teaching staff to sit briefly during group work without structural risk.

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

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

Overview

Product Overview: Size 4 Green Anti-Tilt Senior Primary Seating

The Cobolt Green Size 4 Chair provides a durable, adult-strength foundation for students aged 8 to 11 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the high-frequency cleaning and constant movement required in busy Year 5 and 6 environments.

Upper Primary Posture & Sustainability

  • KS2 Ergonomic Standards: Adhering to Size 4 EN1729 regulations, the 380mm seat height ensures senior primary students maintain a healthy lumbar position while keeping feet firmly planted.
  • Eco-Responsible Lifecycle: Constructed from 100% recyclable polypropylene and steel, this chair supports your institution's carbon reduction targets through its domestic manufacturing.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during long tabletop learning sessions.

Institutional Resilience

  • Vandal-Resistant Fixings: We utilize industrial-grade, tamperproof fasteners to lock the shell to the grey steel frame, ensuring a permanent, safe connection.
  • Stain-Resistant Surface: The non-porous emerald shell resists ink, juice spills, and school chemicals, allowing for instant sanitisation with standard cleaners.
  • Stackable Design: Efficient vertical stacking allows for easy classroom reconfiguration and floor clearing for cleaning.

The Cobolt Standard

  • 50 Years of Manufacturing Heritage: As a trusted public sector partner for half a century, we deliver school furniture that meets and exceeds the most rigorous UK safety benchmarks.
  • Free UK Mainland Delivery: We simplify procurement by absorbing all shipping costs, ensuring your classroom refit project remains strictly on budget.
  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled asset protection, covering frame welds and plastic shell integrity for over a decade.

Features & Benefits

Where is this Size 4 Green Anti-Tilt Chair utilised?

The Green Size 4 School Chair is the primary specification for Year 5 and Year 6 Classrooms, Junior Libraries, Science Zones, and After-School Study Hubs. Its robust frame combined with senior-primary dimensions makes it a versatile solution for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear legs proactively inhibit students from rocking back, reducing senior primary classroom accidents.
  • Size 4 (8-11 Years) – Precision-engineered 380mm seat height for the upper primary age demographic.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both the welded steel frame and the high-impact shell.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains light enough for staff to move and stack.
  • Slate Grey Powder-Coating – A high-quality metallic finish that resists scratches, scuffs, and heavy daily wear.
  • 125kg Load Capacity – Superior structural resilience that safely supports students and adult staff alike.
  • UK Manufactured – Proudly produced in Britain to exceed the most rigorous educational standards.
  • Tamperproof 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK senior primary education.
  • Free UK Mainland Delivery: We manage the delivery of classroom refits at no extra cost, keeping your project within allocated budgets.
  • 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

Senior Primary Safety. Guaranteed Reliability.

  • The Anti-Tilt rear geometry is a crucial design feature for older primary students, shifting the balance point to proactively prevent dangerous tipping habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (380mm) is perfectly scaled for the 8-11 year old stature, promoting healthy spinal habits.
  • 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 4 Green Anti-Tilt Chair combines certified senior primary ergonomics with a heavy-duty safety frame. These specifications detail the materials and dimensions that make it the responsible choice for Year 5 and Year 6 classrooms.

Target Ages
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
380mm
Standard Size 4 for upper primary students
Seat Dimensions
370mm (W) x 300mm (D)
Precision sized for Key Stage 2
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable 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
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety

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: Senior Primary Classroom Seating

Q: Is a "Size 4" chair correct for my Year 5 and Year 6 students?

A: Size 4 (380mm seat height) is the ergonomic standard for children aged 8 to 11 years. It ensures that students can sit with a flat-footed stance, essential for maintaining correct sitting habits during the final stages of Key Stage 2.

Q: How does the "Anti-Tilt" mechanism prevent falls?

A: Older primary students are often more active and prone to rocking on their chairs. The angled rear frame shifts the leverage point further back, making it mechanically difficult for the chair to tip backwards, thereby proactively preventing accidents.

Q: Is the Emerald Green shell resistant to school supplies?

A: Yes. The high-grade polypropylene is non-porous. Spills from ink, juice, or paints cannot penetrate the surface and can be wiped away easily without leaving residues or fading the vivid green colour.

Q: Can adults safely sit on these Size 4 chairs?

A: Yes. Despite being dimensioned for students, the powder-coated steel frame is rated for a massive 125kg. This makes it perfectly safe for teaching staff to sit briefly during group work without structural risk.

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

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

Green Anti-Tilt Senior Primary School Chair - Size 4 - 8-11 Years - Grey Legs

Product code: CH44GR
Create a calming yet productive learning atmosphere with the Cobolt Emerald Green Polypropylene Anti-Tilt Chair (Size 4 / 8-11 Years). Specifically en...

Inc VAT

Exc VAT

£54.00

£45.00

Colours - Lime Green
Age - 8-11 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 4 Green Anti-Tilt Senior Primary Seating

The Cobolt Green Size 4 Chair provides a durable, adult-strength foundation for students aged 8 to 11 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the high-frequency cleaning and constant movement required in busy Year 5 and 6 environments.

Upper Primary Posture & Sustainability

  • KS2 Ergonomic Standards: Adhering to Size 4 EN1729 regulations, the 380mm seat height ensures senior primary students maintain a healthy lumbar position while keeping feet firmly planted.
  • Eco-Responsible Lifecycle: Constructed from 100% recyclable polypropylene and steel, this chair supports your institution's carbon reduction targets through its domestic manufacturing.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during long tabletop learning sessions.

Institutional Resilience

  • Vandal-Resistant Fixings: We utilize industrial-grade, tamperproof fasteners to lock the shell to the grey steel frame, ensuring a permanent, safe connection.
  • Stain-Resistant Surface: The non-porous emerald shell resists ink, juice spills, and school chemicals, allowing for instant sanitisation with standard cleaners.
  • Stackable Design: Efficient vertical stacking allows for easy classroom reconfiguration and floor clearing for cleaning.

The Cobolt Standard

  • 50 Years of Manufacturing Heritage: As a trusted public sector partner for half a century, we deliver school furniture that meets and exceeds the most rigorous UK safety benchmarks.
  • Free UK Mainland Delivery: We simplify procurement by absorbing all shipping costs, ensuring your classroom refit project remains strictly on budget.
  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled asset protection, covering frame welds and plastic shell integrity for over a decade.

Where is this Size 4 Green Anti-Tilt Chair utilised?

The Green Size 4 School Chair is the primary specification for Year 5 and Year 6 Classrooms, Junior Libraries, Science Zones, and After-School Study Hubs. Its robust frame combined with senior-primary dimensions makes it a versatile solution for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear legs proactively inhibit students from rocking back, reducing senior primary classroom accidents.
  • Size 4 (8-11 Years) – Precision-engineered 380mm seat height for the upper primary age demographic.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both the welded steel frame and the high-impact shell.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains light enough for staff to move and stack.
  • Slate Grey Powder-Coating – A high-quality metallic finish that resists scratches, scuffs, and heavy daily wear.
  • 125kg Load Capacity – Superior structural resilience that safely supports students and adult staff alike.
  • UK Manufactured – Proudly produced in Britain to exceed the most rigorous educational standards.
  • Tamperproof 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK senior primary education.
  • Free UK Mainland Delivery: We manage the delivery of classroom refits at no extra cost, keeping your project within allocated budgets.
  • 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.

Senior Primary Safety. Guaranteed Reliability.

  • The Anti-Tilt rear geometry is a crucial design feature for older primary students, shifting the balance point to proactively prevent dangerous tipping habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (380mm) is perfectly scaled for the 8-11 year old stature, promoting healthy spinal habits.
  • 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 4 Green Anti-Tilt Chair combines certified senior primary ergonomics with a heavy-duty safety frame. These specifications detail the materials and dimensions that make it the responsible choice for Year 5 and Year 6 classrooms.

Target Ages
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
380mm
Standard Size 4 for upper primary students
Seat Dimensions
370mm (W) x 300mm (D)
Precision sized for Key Stage 2
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable 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
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety

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: Senior Primary Classroom Seating

Q: Is a "Size 4" chair correct for my Year 5 and Year 6 students?

A: Size 4 (380mm seat height) is the ergonomic standard for children aged 8 to 11 years. It ensures that students can sit with a flat-footed stance, essential for maintaining correct sitting habits during the final stages of Key Stage 2.

Q: How does the "Anti-Tilt" mechanism prevent falls?

A: Older primary students are often more active and prone to rocking on their chairs. The angled rear frame shifts the leverage point further back, making it mechanically difficult for the chair to tip backwards, thereby proactively preventing accidents.

Q: Is the Emerald Green shell resistant to school supplies?

A: Yes. The high-grade polypropylene is non-porous. Spills from ink, juice, or paints cannot penetrate the surface and can be wiped away easily without leaving residues or fading the vivid green colour.

Q: Can adults safely sit on these Size 4 chairs?

A: Yes. Despite being dimensioned for students, the powder-coated steel frame is rated for a massive 125kg. This makes it perfectly safe for teaching staff to sit briefly during group work without structural risk.

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

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

Overview

Product Overview: Size 4 Green Anti-Tilt Senior Primary Seating

The Cobolt Green Size 4 Chair provides a durable, adult-strength foundation for students aged 8 to 11 years. Dispatched with Free UK Mainland Delivery, it is engineered to survive the high-frequency cleaning and constant movement required in busy Year 5 and 6 environments.

Upper Primary Posture & Sustainability

  • KS2 Ergonomic Standards: Adhering to Size 4 EN1729 regulations, the 380mm seat height ensures senior primary students maintain a healthy lumbar position while keeping feet firmly planted.
  • Eco-Responsible Lifecycle: Constructed from 100% recyclable polypropylene and steel, this chair supports your institution's carbon reduction targets through its domestic manufacturing.
  • Improved Blood Flow: The downward-curved front edge removes pressure points behind the knees, preventing restlessness during long tabletop learning sessions.

Institutional Resilience

  • Vandal-Resistant Fixings: We utilize industrial-grade, tamperproof fasteners to lock the shell to the grey steel frame, ensuring a permanent, safe connection.
  • Stain-Resistant Surface: The non-porous emerald shell resists ink, juice spills, and school chemicals, allowing for instant sanitisation with standard cleaners.
  • Stackable Design: Efficient vertical stacking allows for easy classroom reconfiguration and floor clearing for cleaning.

The Cobolt Standard

  • 50 Years of Manufacturing Heritage: As a trusted public sector partner for half a century, we deliver school furniture that meets and exceeds the most rigorous UK safety benchmarks.
  • Free UK Mainland Delivery: We simplify procurement by absorbing all shipping costs, ensuring your classroom refit project remains strictly on budget.
  • Fifteen-Year Financial Shield: Our extensive structural warranty provides unparalleled asset protection, covering frame welds and plastic shell integrity for over a decade.

Features & Benefits

Where is this Size 4 Green Anti-Tilt Chair utilised?

The Green Size 4 School Chair is the primary specification for Year 5 and Year 6 Classrooms, Junior Libraries, Science Zones, and After-School Study Hubs. Its robust frame combined with senior-primary dimensions makes it a versatile solution for diverse educational settings.

Key Features

  • Anti-Tilt Safety Frame – The angled rear legs proactively inhibit students from rocking back, reducing senior primary classroom accidents.
  • Size 4 (8-11 Years) – Precision-engineered 380mm seat height for the upper primary age demographic.
  • 15-Year Structural Guarantee – Industry-leading warranty covering both the welded steel frame and the high-impact shell.
  • 3.5kg Unit Weight – Exceptionally strong construction that remains light enough for staff to move and stack.
  • Slate Grey Powder-Coating – A high-quality metallic finish that resists scratches, scuffs, and heavy daily wear.
  • 125kg Load Capacity – Superior structural resilience that safely supports students and adult staff alike.
  • UK Manufactured – Proudly produced in Britain to exceed the most rigorous educational standards.
  • Tamperproof 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

  • 50 Years of Expertise: We understand the specific durability and hygiene needs of UK senior primary education.
  • Free UK Mainland Delivery: We manage the delivery of classroom refits at no extra cost, keeping your project within allocated budgets.
  • 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

Senior Primary Safety. Guaranteed Reliability.

  • The Anti-Tilt rear geometry is a crucial design feature for older primary students, shifting the balance point to proactively prevent dangerous tipping habits.
  • Strict adherence to BS EN1729 Compliance ensures the seat height (380mm) is perfectly scaled for the 8-11 year old stature, promoting healthy spinal habits.
  • 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 4 Green Anti-Tilt Chair combines certified senior primary ergonomics with a heavy-duty safety frame. These specifications detail the materials and dimensions that make it the responsible choice for Year 5 and Year 6 classrooms.

Target Ages
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Institutional Benefit
Seat Height
380mm
Standard Size 4 for upper primary students
Seat Dimensions
370mm (W) x 300mm (D)
Precision sized for Key Stage 2
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable 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
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety

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: Senior Primary Classroom Seating

Q: Is a "Size 4" chair correct for my Year 5 and Year 6 students?

A: Size 4 (380mm seat height) is the ergonomic standard for children aged 8 to 11 years. It ensures that students can sit with a flat-footed stance, essential for maintaining correct sitting habits during the final stages of Key Stage 2.

Q: How does the "Anti-Tilt" mechanism prevent falls?

A: Older primary students are often more active and prone to rocking on their chairs. The angled rear frame shifts the leverage point further back, making it mechanically difficult for the chair to tip backwards, thereby proactively preventing accidents.

Q: Is the Emerald Green shell resistant to school supplies?

A: Yes. The high-grade polypropylene is non-porous. Spills from ink, juice, or paints cannot penetrate the surface and can be wiped away easily without leaving residues or fading the vivid green colour.

Q: Can adults safely sit on these Size 4 chairs?

A: Yes. Despite being dimensioned for students, the powder-coated steel frame is rated for a massive 125kg. This makes it perfectly safe for teaching staff to sit briefly during group work without structural risk.

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

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

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