A premium white classroom seating solution featuring a tip-resistant leg design and a wipe-clean plastic shell for hygienic school environments.
Supportive educational chair in white with a textured finish and integrated lumbar support, specifically engineered to prevent students from leaning back.
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 White Classic Anti-Tilt Chair

The Cobolt White Size 4 Chair is designed to support students during their transition into senior primary education. Supplied with Free UK Mainland Delivery, it bridges the gap between junior and secondary seating, providing industrial-grade durability in a size-appropriate, ergonomic package. By combining safety-first geometry with a wipe-clean, high-impact shell, it simplifies classroom management and estate maintenance.

The Cobolt Advantage

  • Long-Term Budget Security: Our 15-year warranty protects your school against frequent replacement costs, offering a significantly lower total cost of ownership compared to budget alternatives.
  • Proactive Classroom Safety: The anti-tilt design is essential for active 8-11 year olds, shifting the balance point to discourage "chair swinging" and prevent falls.
  • Hygienic Learning Surface: The non-porous white polypropylene shell is resistant to ink and chemicals, allowing for deep cleaning to maintain a healthy classroom environment.

Ergonomics & Sustainability

  • Size 4 Posture Support: Fully compliant with BS EN1729, the 380mm seat height is precision-engineered for students aged 8-11, ensuring their posture is supported during critical growth years.
  • 100% Recyclable: Proudly UK-manufactured using fully recyclable polypropylene and high-grade steel, helping your school meet its sustainability and waste reduction targets.
  • Lightweight Agility: At just 3.5kg, these chairs are easy for staff to move and stack, yet they remain incredibly strong due to the contoured outer ribbing.

Vandal-Resistant & Secure

Classroom furniture must withstand heavy daily use. We utilise high-security, tamper-proof fasteners to ensure the seat remains permanently attached to the grey steel frame, preventing accidental or intentional dismantling.

The Cobolt Standard

  • 50 Years of Heritage: We have half a century of experience as a trusted partner to UK schools, providing furniture that exceeds standard compliance.
  • Free UK Mainland Delivery: We provide a simple, transparent pricing structure by absorbing all shipping costs for classroom refits.
  • Education Specialist Support: Our UK team is available to help with room planning, large-scale tenders, and specific term-time delivery requirements.

Where is this Size 4 Anti-Tilt Chair used?

The White Size 4 School Chair is the standard specification for Year 5 and Year 6 Classrooms, Primary School Libraries, After-School Clubs, and Junior Learning Centres. Its adult-strength weight rating combined with junior-sized dimensions makes it a versatile asset for a variety of upper-primary settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively discourage children from tipping backwards.
  • Size 4 (8-11 Years) – Standard ergonomic seat height (380mm) for the upper primary age group.
  • 15-Year Warranty – Industry-leading guarantee covering structural welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally robust construction that remains easy to manage and stack.
  • High-Strength Steel Frame – Powder-coated grey for a scratch-resistant finish that withstands heavy daily use.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • BS EN1729 Compliant – Certified ergonomic and structural safety standards for the UK education sector.
  • UK Manufactured – Proudly made in Britain for high quality assurance and a low carbon footprint.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service & Ethos: Quality Primary Seating

  • 50 Years of Expertise: We understand the specific durability needs of high-traffic primary school environments.
  • Free Delivery (UK Mainland): We handle all logistics costs for classroom refits to keep your project on budget.
  • Sustainability Partners: 100% recyclable components help you meet your school's environmental and waste targets.
  • Reliable Support: Our UK-based team assists with everything from single classroom replacements to full campus refits.

Built for Safety. Backed for Reliability.

  • The Anti-Tilt frame geometry is specifically engineered to counteract the leverage needed to swing on the chair, protecting both the student and the chair's structural integrity.
  • Compliance with BS EN1729 ensures the seat height (380mm) and depth (300mm) are ergonomically correct for 8-11 year olds, promoting healthy posture and spinal development.
  • The Contoured Ribbing provides superior back support and structural rigidity while keeping the chair manageable for staff.
  • High-strength Tamper-Proof fasteners keep the shell securely attached to the frame, ensuring safety and vandal-resistance in busy schools.
  • We offer a market-leading 15-year manufacturer's guarantee. This covers the structural welds of the frame and the integrity of the shell for over a decade of use.

The Size 4 White Anti-Tilt Chair offers certified ergonomic support with safety-first engineering. These specifications detail the materials and dimensions that make it the responsible choice for upper primary classrooms.

Age Group
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Purpose / Benefit
Seat Height
380mm
Standard Size 4 for ages 8-11
Seat Dimensions
370mm (W) x 300mm (D)
Ergonomically sized for Years 5 & 6
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable classroom footprint
Unit Weight
3.5kg
Robust yet easy to stack
Frame Material
Powder Coated Steel (Grey)
Durable and scratch resistant
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Sustainability
100% Recyclable
Eco-friendly lifecycle
Origin
Manufactured in UK
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: Leading Primary School Seating Solutions

Q: Is a "Size 4" chair correct for my Years 5 and 6 classrooms?

A: Size 4 is the ergonomic standard for children aged 8 to 11 years. With a 380mm seat height, it is specifically designed for upper junior students, helping to ensure a healthy sitting posture during their final primary years.

Q: How does the "Anti-Tilt" feature help in the classroom?

A: Older primary students are often more active and prone to leaning back on their chairs. The angled rear frame changes the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively reduces classroom accidents and focus disruptions.

Q: Is the white colour difficult to keep clean in a junior school?

A: No. The polypropylene material is non-porous. Unlike wood or fabric, it does not absorb ink, paint, or food. It can be wiped clean instantly with standard anti-bacterial sprays, ensuring your classroom maintains a high level of hygiene.

Q: Are these chairs easy for cleaning staff to manage?

A: Yes. Weighing 3.5kg, they are robust but remain manageable for staff. They also stack safely, allowing cleaning staff to clear floor space efficiently after the school day ends.

Q: Does the chair meet UK safety standards?

A: Absolutely. It is fully compliant with BS EN1729, meaning it meets the specific requirements for ergonomic posture and structural durability for use in UK educational settings.

Q: Is it really 100% recyclable?

A: Yes. At the end of its life, the chair can be separated into its plastic and steel components, both of which are fully recyclable. This supports your school’s commitment to environmental sustainability.

Q: What is the benefit of buying a UK-manufactured chair?

A: Buying UK-made ensures a lower carbon footprint due to reduced transport. It also guarantees consistent quality control and faster lead times compared to imported furniture.

Q: What does the 15-year warranty cover?

A: The warranty covers any structural failure in the frame welds or the integrity of the plastic shell due to manufacturing defects. This provides your school with exceptional long-term budget security.

Q: Why choose Cobolt Furniture for upper primary seating?

A: With over 50 years of heritage, we are a trusted partner to UK education providers. We offer Free UK Mainland Delivery, expert advice, and products designed specifically for the rigours of school life.

Overview

Product Overview: Size 4 White Classic Anti-Tilt Chair

The Cobolt White Size 4 Chair is designed to support students during their transition into senior primary education. Supplied with Free UK Mainland Delivery, it bridges the gap between junior and secondary seating, providing industrial-grade durability in a size-appropriate, ergonomic package. By combining safety-first geometry with a wipe-clean, high-impact shell, it simplifies classroom management and estate maintenance.

The Cobolt Advantage

  • Long-Term Budget Security: Our 15-year warranty protects your school against frequent replacement costs, offering a significantly lower total cost of ownership compared to budget alternatives.
  • Proactive Classroom Safety: The anti-tilt design is essential for active 8-11 year olds, shifting the balance point to discourage "chair swinging" and prevent falls.
  • Hygienic Learning Surface: The non-porous white polypropylene shell is resistant to ink and chemicals, allowing for deep cleaning to maintain a healthy classroom environment.

Ergonomics & Sustainability

  • Size 4 Posture Support: Fully compliant with BS EN1729, the 380mm seat height is precision-engineered for students aged 8-11, ensuring their posture is supported during critical growth years.
  • 100% Recyclable: Proudly UK-manufactured using fully recyclable polypropylene and high-grade steel, helping your school meet its sustainability and waste reduction targets.
  • Lightweight Agility: At just 3.5kg, these chairs are easy for staff to move and stack, yet they remain incredibly strong due to the contoured outer ribbing.

Vandal-Resistant & Secure

Classroom furniture must withstand heavy daily use. We utilise high-security, tamper-proof fasteners to ensure the seat remains permanently attached to the grey steel frame, preventing accidental or intentional dismantling.

The Cobolt Standard

  • 50 Years of Heritage: We have half a century of experience as a trusted partner to UK schools, providing furniture that exceeds standard compliance.
  • Free UK Mainland Delivery: We provide a simple, transparent pricing structure by absorbing all shipping costs for classroom refits.
  • Education Specialist Support: Our UK team is available to help with room planning, large-scale tenders, and specific term-time delivery requirements.

Features & Benefits

Where is this Size 4 Anti-Tilt Chair used?

The White Size 4 School Chair is the standard specification for Year 5 and Year 6 Classrooms, Primary School Libraries, After-School Clubs, and Junior Learning Centres. Its adult-strength weight rating combined with junior-sized dimensions makes it a versatile asset for a variety of upper-primary settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively discourage children from tipping backwards.
  • Size 4 (8-11 Years) – Standard ergonomic seat height (380mm) for the upper primary age group.
  • 15-Year Warranty – Industry-leading guarantee covering structural welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally robust construction that remains easy to manage and stack.
  • High-Strength Steel Frame – Powder-coated grey for a scratch-resistant finish that withstands heavy daily use.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • BS EN1729 Compliant – Certified ergonomic and structural safety standards for the UK education sector.
  • UK Manufactured – Proudly made in Britain for high quality assurance and a low carbon footprint.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service & Ethos: Quality Primary Seating

  • 50 Years of Expertise: We understand the specific durability needs of high-traffic primary school environments.
  • Free Delivery (UK Mainland): We handle all logistics costs for classroom refits to keep your project on budget.
  • Sustainability Partners: 100% recyclable components help you meet your school's environmental and waste targets.
  • Reliable Support: Our UK-based team assists with everything from single classroom replacements to full campus refits.

Safety & Warranty

Built for Safety. Backed for Reliability.

  • The Anti-Tilt frame geometry is specifically engineered to counteract the leverage needed to swing on the chair, protecting both the student and the chair's structural integrity.
  • Compliance with BS EN1729 ensures the seat height (380mm) and depth (300mm) are ergonomically correct for 8-11 year olds, promoting healthy posture and spinal development.
  • The Contoured Ribbing provides superior back support and structural rigidity while keeping the chair manageable for staff.
  • High-strength Tamper-Proof fasteners keep the shell securely attached to the frame, ensuring safety and vandal-resistance in busy schools.
  • We offer a market-leading 15-year manufacturer's guarantee. This covers the structural welds of the frame and the integrity of the shell for over a decade of use.

Specification Dimensions

The Size 4 White Anti-Tilt Chair offers certified ergonomic support with safety-first engineering. These specifications detail the materials and dimensions that make it the responsible choice for upper primary classrooms.

Age Group
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Purpose / Benefit
Seat Height
380mm
Standard Size 4 for ages 8-11
Seat Dimensions
370mm (W) x 300mm (D)
Ergonomically sized for Years 5 & 6
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable classroom footprint
Unit Weight
3.5kg
Robust yet easy to stack
Frame Material
Powder Coated Steel (Grey)
Durable and scratch resistant
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Sustainability
100% Recyclable
Eco-friendly lifecycle
Origin
Manufactured in UK
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: Leading Primary School Seating Solutions

Q: Is a "Size 4" chair correct for my Years 5 and 6 classrooms?

A: Size 4 is the ergonomic standard for children aged 8 to 11 years. With a 380mm seat height, it is specifically designed for upper junior students, helping to ensure a healthy sitting posture during their final primary years.

Q: How does the "Anti-Tilt" feature help in the classroom?

A: Older primary students are often more active and prone to leaning back on their chairs. The angled rear frame changes the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively reduces classroom accidents and focus disruptions.

Q: Is the white colour difficult to keep clean in a junior school?

A: No. The polypropylene material is non-porous. Unlike wood or fabric, it does not absorb ink, paint, or food. It can be wiped clean instantly with standard anti-bacterial sprays, ensuring your classroom maintains a high level of hygiene.

Q: Are these chairs easy for cleaning staff to manage?

A: Yes. Weighing 3.5kg, they are robust but remain manageable for staff. They also stack safely, allowing cleaning staff to clear floor space efficiently after the school day ends.

Q: Does the chair meet UK safety standards?

A: Absolutely. It is fully compliant with BS EN1729, meaning it meets the specific requirements for ergonomic posture and structural durability for use in UK educational settings.

Q: Is it really 100% recyclable?

A: Yes. At the end of its life, the chair can be separated into its plastic and steel components, both of which are fully recyclable. This supports your school’s commitment to environmental sustainability.

Q: What is the benefit of buying a UK-manufactured chair?

A: Buying UK-made ensures a lower carbon footprint due to reduced transport. It also guarantees consistent quality control and faster lead times compared to imported furniture.

Q: What does the 15-year warranty cover?

A: The warranty covers any structural failure in the frame welds or the integrity of the plastic shell due to manufacturing defects. This provides your school with exceptional long-term budget security.

Q: Why choose Cobolt Furniture for upper primary seating?

A: With over 50 years of heritage, we are a trusted partner to UK education providers. We offer Free UK Mainland Delivery, expert advice, and products designed specifically for the rigours of school life.

White Classic Polypropylene Anti-Tilt School Chair - Size 4 - Ages 8-11

Product code: CH44WH
Modernise your upper junior and Key Stage 2 learning environments with the Cobolt White Classic Polypropylene School Chair (Size 4 / 8-11 Years). Spec...

Inc VAT

Exc VAT

£54.00

£45.00

Colours - White
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 White Classic Anti-Tilt Chair

The Cobolt White Size 4 Chair is designed to support students during their transition into senior primary education. Supplied with Free UK Mainland Delivery, it bridges the gap between junior and secondary seating, providing industrial-grade durability in a size-appropriate, ergonomic package. By combining safety-first geometry with a wipe-clean, high-impact shell, it simplifies classroom management and estate maintenance.

The Cobolt Advantage

  • Long-Term Budget Security: Our 15-year warranty protects your school against frequent replacement costs, offering a significantly lower total cost of ownership compared to budget alternatives.
  • Proactive Classroom Safety: The anti-tilt design is essential for active 8-11 year olds, shifting the balance point to discourage "chair swinging" and prevent falls.
  • Hygienic Learning Surface: The non-porous white polypropylene shell is resistant to ink and chemicals, allowing for deep cleaning to maintain a healthy classroom environment.

Ergonomics & Sustainability

  • Size 4 Posture Support: Fully compliant with BS EN1729, the 380mm seat height is precision-engineered for students aged 8-11, ensuring their posture is supported during critical growth years.
  • 100% Recyclable: Proudly UK-manufactured using fully recyclable polypropylene and high-grade steel, helping your school meet its sustainability and waste reduction targets.
  • Lightweight Agility: At just 3.5kg, these chairs are easy for staff to move and stack, yet they remain incredibly strong due to the contoured outer ribbing.

Vandal-Resistant & Secure

Classroom furniture must withstand heavy daily use. We utilise high-security, tamper-proof fasteners to ensure the seat remains permanently attached to the grey steel frame, preventing accidental or intentional dismantling.

The Cobolt Standard

  • 50 Years of Heritage: We have half a century of experience as a trusted partner to UK schools, providing furniture that exceeds standard compliance.
  • Free UK Mainland Delivery: We provide a simple, transparent pricing structure by absorbing all shipping costs for classroom refits.
  • Education Specialist Support: Our UK team is available to help with room planning, large-scale tenders, and specific term-time delivery requirements.

Where is this Size 4 Anti-Tilt Chair used?

The White Size 4 School Chair is the standard specification for Year 5 and Year 6 Classrooms, Primary School Libraries, After-School Clubs, and Junior Learning Centres. Its adult-strength weight rating combined with junior-sized dimensions makes it a versatile asset for a variety of upper-primary settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively discourage children from tipping backwards.
  • Size 4 (8-11 Years) – Standard ergonomic seat height (380mm) for the upper primary age group.
  • 15-Year Warranty – Industry-leading guarantee covering structural welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally robust construction that remains easy to manage and stack.
  • High-Strength Steel Frame – Powder-coated grey for a scratch-resistant finish that withstands heavy daily use.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • BS EN1729 Compliant – Certified ergonomic and structural safety standards for the UK education sector.
  • UK Manufactured – Proudly made in Britain for high quality assurance and a low carbon footprint.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service & Ethos: Quality Primary Seating

  • 50 Years of Expertise: We understand the specific durability needs of high-traffic primary school environments.
  • Free Delivery (UK Mainland): We handle all logistics costs for classroom refits to keep your project on budget.
  • Sustainability Partners: 100% recyclable components help you meet your school's environmental and waste targets.
  • Reliable Support: Our UK-based team assists with everything from single classroom replacements to full campus refits.

Built for Safety. Backed for Reliability.

  • The Anti-Tilt frame geometry is specifically engineered to counteract the leverage needed to swing on the chair, protecting both the student and the chair's structural integrity.
  • Compliance with BS EN1729 ensures the seat height (380mm) and depth (300mm) are ergonomically correct for 8-11 year olds, promoting healthy posture and spinal development.
  • The Contoured Ribbing provides superior back support and structural rigidity while keeping the chair manageable for staff.
  • High-strength Tamper-Proof fasteners keep the shell securely attached to the frame, ensuring safety and vandal-resistance in busy schools.
  • We offer a market-leading 15-year manufacturer's guarantee. This covers the structural welds of the frame and the integrity of the shell for over a decade of use.

The Size 4 White Anti-Tilt Chair offers certified ergonomic support with safety-first engineering. These specifications detail the materials and dimensions that make it the responsible choice for upper primary classrooms.

Age Group
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Purpose / Benefit
Seat Height
380mm
Standard Size 4 for ages 8-11
Seat Dimensions
370mm (W) x 300mm (D)
Ergonomically sized for Years 5 & 6
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable classroom footprint
Unit Weight
3.5kg
Robust yet easy to stack
Frame Material
Powder Coated Steel (Grey)
Durable and scratch resistant
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Sustainability
100% Recyclable
Eco-friendly lifecycle
Origin
Manufactured in UK
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: Leading Primary School Seating Solutions

Q: Is a "Size 4" chair correct for my Years 5 and 6 classrooms?

A: Size 4 is the ergonomic standard for children aged 8 to 11 years. With a 380mm seat height, it is specifically designed for upper junior students, helping to ensure a healthy sitting posture during their final primary years.

Q: How does the "Anti-Tilt" feature help in the classroom?

A: Older primary students are often more active and prone to leaning back on their chairs. The angled rear frame changes the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively reduces classroom accidents and focus disruptions.

Q: Is the white colour difficult to keep clean in a junior school?

A: No. The polypropylene material is non-porous. Unlike wood or fabric, it does not absorb ink, paint, or food. It can be wiped clean instantly with standard anti-bacterial sprays, ensuring your classroom maintains a high level of hygiene.

Q: Are these chairs easy for cleaning staff to manage?

A: Yes. Weighing 3.5kg, they are robust but remain manageable for staff. They also stack safely, allowing cleaning staff to clear floor space efficiently after the school day ends.

Q: Does the chair meet UK safety standards?

A: Absolutely. It is fully compliant with BS EN1729, meaning it meets the specific requirements for ergonomic posture and structural durability for use in UK educational settings.

Q: Is it really 100% recyclable?

A: Yes. At the end of its life, the chair can be separated into its plastic and steel components, both of which are fully recyclable. This supports your school’s commitment to environmental sustainability.

Q: What is the benefit of buying a UK-manufactured chair?

A: Buying UK-made ensures a lower carbon footprint due to reduced transport. It also guarantees consistent quality control and faster lead times compared to imported furniture.

Q: What does the 15-year warranty cover?

A: The warranty covers any structural failure in the frame welds or the integrity of the plastic shell due to manufacturing defects. This provides your school with exceptional long-term budget security.

Q: Why choose Cobolt Furniture for upper primary seating?

A: With over 50 years of heritage, we are a trusted partner to UK education providers. We offer Free UK Mainland Delivery, expert advice, and products designed specifically for the rigours of school life.

Overview

Product Overview: Size 4 White Classic Anti-Tilt Chair

The Cobolt White Size 4 Chair is designed to support students during their transition into senior primary education. Supplied with Free UK Mainland Delivery, it bridges the gap between junior and secondary seating, providing industrial-grade durability in a size-appropriate, ergonomic package. By combining safety-first geometry with a wipe-clean, high-impact shell, it simplifies classroom management and estate maintenance.

The Cobolt Advantage

  • Long-Term Budget Security: Our 15-year warranty protects your school against frequent replacement costs, offering a significantly lower total cost of ownership compared to budget alternatives.
  • Proactive Classroom Safety: The anti-tilt design is essential for active 8-11 year olds, shifting the balance point to discourage "chair swinging" and prevent falls.
  • Hygienic Learning Surface: The non-porous white polypropylene shell is resistant to ink and chemicals, allowing for deep cleaning to maintain a healthy classroom environment.

Ergonomics & Sustainability

  • Size 4 Posture Support: Fully compliant with BS EN1729, the 380mm seat height is precision-engineered for students aged 8-11, ensuring their posture is supported during critical growth years.
  • 100% Recyclable: Proudly UK-manufactured using fully recyclable polypropylene and high-grade steel, helping your school meet its sustainability and waste reduction targets.
  • Lightweight Agility: At just 3.5kg, these chairs are easy for staff to move and stack, yet they remain incredibly strong due to the contoured outer ribbing.

Vandal-Resistant & Secure

Classroom furniture must withstand heavy daily use. We utilise high-security, tamper-proof fasteners to ensure the seat remains permanently attached to the grey steel frame, preventing accidental or intentional dismantling.

The Cobolt Standard

  • 50 Years of Heritage: We have half a century of experience as a trusted partner to UK schools, providing furniture that exceeds standard compliance.
  • Free UK Mainland Delivery: We provide a simple, transparent pricing structure by absorbing all shipping costs for classroom refits.
  • Education Specialist Support: Our UK team is available to help with room planning, large-scale tenders, and specific term-time delivery requirements.

Features & Benefits

Where is this Size 4 Anti-Tilt Chair used?

The White Size 4 School Chair is the standard specification for Year 5 and Year 6 Classrooms, Primary School Libraries, After-School Clubs, and Junior Learning Centres. Its adult-strength weight rating combined with junior-sized dimensions makes it a versatile asset for a variety of upper-primary settings.

Key Features

  • Anti-Tilt Safety Frame – Angled rear legs proactively discourage children from tipping backwards.
  • Size 4 (8-11 Years) – Standard ergonomic seat height (380mm) for the upper primary age group.
  • 15-Year Warranty – Industry-leading guarantee covering structural welds and plastic shell integrity.
  • 3.5kg Unit Weight – Exceptionally robust construction that remains easy to manage and stack.
  • High-Strength Steel Frame – Powder-coated grey for a scratch-resistant finish that withstands heavy daily use.
  • Stackable Design – Efficient vertical stacking allows for easy classroom reconfiguration and floor cleaning.
  • BS EN1729 Compliant – Certified ergonomic and structural safety standards for the UK education sector.
  • UK Manufactured – Proudly made in Britain for high quality assurance and a low carbon footprint.
Warranty icon
15-year manufacturer guarantee
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
Made in UK

Cobolt Service & Ethos: Quality Primary Seating

  • 50 Years of Expertise: We understand the specific durability needs of high-traffic primary school environments.
  • Free Delivery (UK Mainland): We handle all logistics costs for classroom refits to keep your project on budget.
  • Sustainability Partners: 100% recyclable components help you meet your school's environmental and waste targets.
  • Reliable Support: Our UK-based team assists with everything from single classroom replacements to full campus refits.

Safety & Warranty

Built for Safety. Backed for Reliability.

  • The Anti-Tilt frame geometry is specifically engineered to counteract the leverage needed to swing on the chair, protecting both the student and the chair's structural integrity.
  • Compliance with BS EN1729 ensures the seat height (380mm) and depth (300mm) are ergonomically correct for 8-11 year olds, promoting healthy posture and spinal development.
  • The Contoured Ribbing provides superior back support and structural rigidity while keeping the chair manageable for staff.
  • High-strength Tamper-Proof fasteners keep the shell securely attached to the frame, ensuring safety and vandal-resistance in busy schools.
  • We offer a market-leading 15-year manufacturer's guarantee. This covers the structural welds of the frame and the integrity of the shell for over a decade of use.

Specification Dimensions

The Size 4 White Anti-Tilt Chair offers certified ergonomic support with safety-first engineering. These specifications detail the materials and dimensions that make it the responsible choice for upper primary classrooms.

Age Group
8-11 Years (Size 4)
Material
100% Polypropylene
Guarantee
15 Years
Specification
Details
Purpose / Benefit
Seat Height
380mm
Standard Size 4 for ages 8-11
Seat Dimensions
370mm (W) x 300mm (D)
Ergonomically sized for Years 5 & 6
Total Dimensions
700mm(H) x 410mm(W) x 480mm(D)
Stable classroom footprint
Unit Weight
3.5kg
Robust yet easy to stack
Frame Material
Powder Coated Steel (Grey)
Durable and scratch resistant
Compliance
BS EN1729 Compliant
Certified ergonomic and structural safety
Sustainability
100% Recyclable
Eco-friendly lifecycle
Origin
Manufactured in UK
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: Leading Primary School Seating Solutions

Q: Is a "Size 4" chair correct for my Years 5 and 6 classrooms?

A: Size 4 is the ergonomic standard for children aged 8 to 11 years. With a 380mm seat height, it is specifically designed for upper junior students, helping to ensure a healthy sitting posture during their final primary years.

Q: How does the "Anti-Tilt" feature help in the classroom?

A: Older primary students are often more active and prone to leaning back on their chairs. The angled rear frame changes the leverage point, making it mechanically difficult for the chair to tip backwards. This proactively reduces classroom accidents and focus disruptions.

Q: Is the white colour difficult to keep clean in a junior school?

A: No. The polypropylene material is non-porous. Unlike wood or fabric, it does not absorb ink, paint, or food. It can be wiped clean instantly with standard anti-bacterial sprays, ensuring your classroom maintains a high level of hygiene.

Q: Are these chairs easy for cleaning staff to manage?

A: Yes. Weighing 3.5kg, they are robust but remain manageable for staff. They also stack safely, allowing cleaning staff to clear floor space efficiently after the school day ends.

Q: Does the chair meet UK safety standards?

A: Absolutely. It is fully compliant with BS EN1729, meaning it meets the specific requirements for ergonomic posture and structural durability for use in UK educational settings.

Q: Is it really 100% recyclable?

A: Yes. At the end of its life, the chair can be separated into its plastic and steel components, both of which are fully recyclable. This supports your school’s commitment to environmental sustainability.

Q: What is the benefit of buying a UK-manufactured chair?

A: Buying UK-made ensures a lower carbon footprint due to reduced transport. It also guarantees consistent quality control and faster lead times compared to imported furniture.

Q: What does the 15-year warranty cover?

A: The warranty covers any structural failure in the frame welds or the integrity of the plastic shell due to manufacturing defects. This provides your school with exceptional long-term budget security.

Q: Why choose Cobolt Furniture for upper primary seating?

A: With over 50 years of heritage, we are a trusted partner to UK education providers. We offer Free UK Mainland Delivery, expert advice, and products designed specifically for the rigours of school life.

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