Grey fabric operator office chair with cushioned backrest and seat, black armrests, twin lever mechanism and height-adjustable five-star base with castor wheels on a white background.

Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Ergonomic Charcoal Operator Chair with Integrated Arms

Achieve a perfect balance of professional styling and uncompromised mechanical performance. This charcoal grey operator chair is engineered to provide targeted spinal support, ensuring users remain comfortable throughout long administrative sessions or study periods.

The Cobolt Advantage

  • Independent Back Rake Adjustment: Gain total control over your reclining angle. Unlike standard chairs where the seat and back move together, this model allows you to tilt the backrest independently and lock it in your preferred position for focused desk work.
  • Precision Spinal Support: The manual back height adjustment is a critical ergonomic feature. It allows you to raise or lower the backrest so the contoured lumbar padding aligns perfectly with your lower spine, reducing the risk of musculoskeletal fatigue.
  • Grounded Arm Support: The integrated fixed armrests provide a stable and permanent platform for the elbows and forearms. This consistent support helps dissipate tension in the shoulders and neck, preventing repetitive strain injuries.

Certified Durability & Style

  • Heavy-Duty Charcoal Upholstery: The seat and back are wrapped in a high-abrasion, commercial-grade charcoal fabric. This neutral material is designed to resist pilling and staining, maintaining its professional look in high-traffic suites.
  • EN 1335 Compliance: This chair meets strict EN 1335-1:2000 and EN 1335-2:2018 criteria. It has been independently verified to meet the structural and safety requirements for commercial office seating.
  • High-Performance Gas Lift: Equipped with a precision gas strut that provides a 110mm height range, ensuring users can keep their feet flat for optimal blood flow and pelvic alignment.

The Cobolt Standard

  • Free Mainland UK Delivery: We handle the heavy lifting of logistics. Every charcoal task chair includes Free Mainland UK Delivery, ensuring your facility budget is used efficiently on high-quality equipment.
  • 50 Years of Mastery: We leverage five decades of B2B furniture pedigree to select essential equipment engineered to survive the relentless, multi-user reality of the British public sector.
  • British Design Heritage: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Where is the Fixed-Arm Charcoal Operator Chair best utilised?

The Charcoal Fabric Operator Chair is the primary specification for School Reception Areas, University IT Suites, and Corporate Hot-Desking Zones. Its sophisticated neutral finish makes it a popular choice for Healthcare Administrative Areas and professional Consultancy Offices.

Key Features

  • Independent Back Rake Control — Backrest angle can be adjusted separately from the seat and locked in multiple positions.
  • Precision Back Height Adjustment — Allows the seat back to be raised and lowered to target the lumbar region specifically.
  • Contoured Seat Pan — High-density foam designed to distribute weight and increase comfort during long sittings.
  • Robust Fixed Arms — Provides a permanent support platform for the upper body to reduce shoulder muscle tension.
  • 110kg Maximum Capacity — Robustly built for commercial environments and daily professional usage.
  • EN 1335 Compliance — Independently certified to European standards for office chair safety and ergonomic dimensions.
  • Reinforced Five-Star Base — Fitted with high-quality swivel castors for effortless mobility on all office floor types.
  • Designed in the UK — Engineered to meet the specific functional and aesthetic standards of the British market.
Warranty icon
3-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Workplace Wellbeing

  • B2B Quality Focus: We provide professional-grade furniture intended for high-traffic use in educational and business facilities, moving beyond light-duty retail products.
  • Compliance Assurance: Our adherence to EN 1335 ensures that your institution meets necessary health and safety benchmarks for workstation ergonomics.
  • Specialist Logistics: Chairs are dispatched via professional networks to ensure they arrive securely and ready for rapid campus setup.

Certified Security. Structural Reliability.

  • The Gas Lift Height Adjustment is tested for long-term longevity, ensuring seat height remains stable without slipping under load.
  • Complies with EN 1335 Standards, meaning the chair has been independently verified to remain stable and safe under commercial usage.
  • The Back Rake Locking Mechanism provides a secure, static backrest, essential for preventing posture damage during high-focus tasks.
  • Features an Ergonomically Contoured Backrest that encourages correct spinal alignment, reducing the risk of long-term lower back complaints.
  • This operator chair is protected by our 3-year commercial warranty, covering all mechanical parts and structural integrity under normal office usage.

A professional Charcoal Grey fabric operator chair featuring integrated fixed arms, independent back rake adjustment, and full EN 1335 certification.

Weight Capacity
110kg
Standard
EN 1335
Guarantee
3 Years
Specification
Dimensions
Purpose / Benefit
Total Height
895mm - 1005mm
Variable range to ensure proper spinal support for users of different statures
Seat Height
460mm - 570mm
Ensures the user can maintain an ergonomic 90-degree angle at the knees
Seat Width & Depth
480mm(W) x 445mm(D)
Contoured seat pan increases comfort during long periods of administrative work
Backrest Dimensions
480mm(H) x 450mm(W)
Wide backrest surface provides reliable support across the mid and lower spine
Total Unit Width
480mm
Compact format designed to fit within standard workstation zones
Tilt Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple ergonomic positions
Weight
13.6kg
Solid commercial build quality ensuring stability and daily resilience
Finish
Charcoal Grey Fabric
High-abrasion neutral upholstery designed for institutional and commercial longevity
Origin
Designed in the UK
Refining ergonomic standards for the British workplace environment

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 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.

Frequently Asked Questions

1. What is "Independent Back Rake Adjustment"?

A: This feature allows you to tilt the angle of the backrest independently of the seat pan. You can lock it in various positions to support an upright typing posture or a slightly reclined reading angle.

2. Will the charcoal grey fabric withstand heavy daily use?

A: Yes. The chair is upholstered in high-abrasion commercial fabric. Charcoal is a highly practical choice for high-traffic environments as it resists showing marks while maintaining a professional appearance.

3. Why is EN 1335 certification important for health and safety compliance?

A: EN 1335 is the European benchmark for office work chairs. Compliance ensures the chair provides correct ergonomic support and stability, helping institutions meet their duty of care for workstation wellbeing.

4. Is the backrest height adjustable on this charcoal model?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back for targeted lumbar support.

5. What is the maximum user weight for this chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the industry standard for daily commercial office seating.

6. Will the armrests fit under a standard school office desk?

A: Absolutely. The chair is designed with standard UK workstation dimensions in mind. Most desks are 720-750mm high, and this chair will comfortably tuck underneath most work surfaces when not in use.

7. Is assembly difficult once it arrives?

A: Not at all. The chair arrives with clear, step-by-step instructions and all the necessary fixings. Most users find they can have it assembled and ready for work in approximately 15 minutes.

8. What exactly does the 3-year warranty cover?

A: Our 3-year commercial warranty provides comprehensive cover for all mechanical components—including the gas lift and tilt mechanisms—and any structural frame defects under normal office conditions.

Overview

Product Overview: Ergonomic Charcoal Operator Chair with Integrated Arms

Achieve a perfect balance of professional styling and uncompromised mechanical performance. This charcoal grey operator chair is engineered to provide targeted spinal support, ensuring users remain comfortable throughout long administrative sessions or study periods.

The Cobolt Advantage

  • Independent Back Rake Adjustment: Gain total control over your reclining angle. Unlike standard chairs where the seat and back move together, this model allows you to tilt the backrest independently and lock it in your preferred position for focused desk work.
  • Precision Spinal Support: The manual back height adjustment is a critical ergonomic feature. It allows you to raise or lower the backrest so the contoured lumbar padding aligns perfectly with your lower spine, reducing the risk of musculoskeletal fatigue.
  • Grounded Arm Support: The integrated fixed armrests provide a stable and permanent platform for the elbows and forearms. This consistent support helps dissipate tension in the shoulders and neck, preventing repetitive strain injuries.

Certified Durability & Style

  • Heavy-Duty Charcoal Upholstery: The seat and back are wrapped in a high-abrasion, commercial-grade charcoal fabric. This neutral material is designed to resist pilling and staining, maintaining its professional look in high-traffic suites.
  • EN 1335 Compliance: This chair meets strict EN 1335-1:2000 and EN 1335-2:2018 criteria. It has been independently verified to meet the structural and safety requirements for commercial office seating.
  • High-Performance Gas Lift: Equipped with a precision gas strut that provides a 110mm height range, ensuring users can keep their feet flat for optimal blood flow and pelvic alignment.

The Cobolt Standard

  • Free Mainland UK Delivery: We handle the heavy lifting of logistics. Every charcoal task chair includes Free Mainland UK Delivery, ensuring your facility budget is used efficiently on high-quality equipment.
  • 50 Years of Mastery: We leverage five decades of B2B furniture pedigree to select essential equipment engineered to survive the relentless, multi-user reality of the British public sector.
  • British Design Heritage: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Features & Benefits

Where is the Fixed-Arm Charcoal Operator Chair best utilised?

The Charcoal Fabric Operator Chair is the primary specification for School Reception Areas, University IT Suites, and Corporate Hot-Desking Zones. Its sophisticated neutral finish makes it a popular choice for Healthcare Administrative Areas and professional Consultancy Offices.

Key Features

  • Independent Back Rake Control — Backrest angle can be adjusted separately from the seat and locked in multiple positions.
  • Precision Back Height Adjustment — Allows the seat back to be raised and lowered to target the lumbar region specifically.
  • Contoured Seat Pan — High-density foam designed to distribute weight and increase comfort during long sittings.
  • Robust Fixed Arms — Provides a permanent support platform for the upper body to reduce shoulder muscle tension.
  • 110kg Maximum Capacity — Robustly built for commercial environments and daily professional usage.
  • EN 1335 Compliance — Independently certified to European standards for office chair safety and ergonomic dimensions.
  • Reinforced Five-Star Base — Fitted with high-quality swivel castors for effortless mobility on all office floor types.
  • Designed in the UK — Engineered to meet the specific functional and aesthetic standards of the British market.
Warranty icon
3-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Workplace Wellbeing

  • B2B Quality Focus: We provide professional-grade furniture intended for high-traffic use in educational and business facilities, moving beyond light-duty retail products.
  • Compliance Assurance: Our adherence to EN 1335 ensures that your institution meets necessary health and safety benchmarks for workstation ergonomics.
  • Specialist Logistics: Chairs are dispatched via professional networks to ensure they arrive securely and ready for rapid campus setup.

Safety & Warranty

Certified Security. Structural Reliability.

  • The Gas Lift Height Adjustment is tested for long-term longevity, ensuring seat height remains stable without slipping under load.
  • Complies with EN 1335 Standards, meaning the chair has been independently verified to remain stable and safe under commercial usage.
  • The Back Rake Locking Mechanism provides a secure, static backrest, essential for preventing posture damage during high-focus tasks.
  • Features an Ergonomically Contoured Backrest that encourages correct spinal alignment, reducing the risk of long-term lower back complaints.
  • This operator chair is protected by our 3-year commercial warranty, covering all mechanical parts and structural integrity under normal office usage.

Specification Dimensions

A professional Charcoal Grey fabric operator chair featuring integrated fixed arms, independent back rake adjustment, and full EN 1335 certification.

Weight Capacity
110kg
Standard
EN 1335
Guarantee
3 Years
Specification
Dimensions
Purpose / Benefit
Total Height
895mm - 1005mm
Variable range to ensure proper spinal support for users of different statures
Seat Height
460mm - 570mm
Ensures the user can maintain an ergonomic 90-degree angle at the knees
Seat Width & Depth
480mm(W) x 445mm(D)
Contoured seat pan increases comfort during long periods of administrative work
Backrest Dimensions
480mm(H) x 450mm(W)
Wide backrest surface provides reliable support across the mid and lower spine
Total Unit Width
480mm
Compact format designed to fit within standard workstation zones
Tilt Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple ergonomic positions
Weight
13.6kg
Solid commercial build quality ensuring stability and daily resilience
Finish
Charcoal Grey Fabric
High-abrasion neutral upholstery designed for institutional and commercial longevity
Origin
Designed in the UK
Refining ergonomic standards for the British workplace environment

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 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

Frequently Asked Questions

1. What is "Independent Back Rake Adjustment"?

A: This feature allows you to tilt the angle of the backrest independently of the seat pan. You can lock it in various positions to support an upright typing posture or a slightly reclined reading angle.

2. Will the charcoal grey fabric withstand heavy daily use?

A: Yes. The chair is upholstered in high-abrasion commercial fabric. Charcoal is a highly practical choice for high-traffic environments as it resists showing marks while maintaining a professional appearance.

3. Why is EN 1335 certification important for health and safety compliance?

A: EN 1335 is the European benchmark for office work chairs. Compliance ensures the chair provides correct ergonomic support and stability, helping institutions meet their duty of care for workstation wellbeing.

4. Is the backrest height adjustable on this charcoal model?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back for targeted lumbar support.

5. What is the maximum user weight for this chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the industry standard for daily commercial office seating.

6. Will the armrests fit under a standard school office desk?

A: Absolutely. The chair is designed with standard UK workstation dimensions in mind. Most desks are 720-750mm high, and this chair will comfortably tuck underneath most work surfaces when not in use.

7. Is assembly difficult once it arrives?

A: Not at all. The chair arrives with clear, step-by-step instructions and all the necessary fixings. Most users find they can have it assembled and ready for work in approximately 15 minutes.

8. What exactly does the 3-year warranty cover?

A: Our 3-year commercial warranty provides comprehensive cover for all mechanical components—including the gas lift and tilt mechanisms—and any structural frame defects under normal office conditions.

Charcoal Grey Fabric Operators Chair with Fixed Arms

Product code: OC305C
Modernise your administrative suite with the Charcoal Grey Fabric Operators Chair with Fixed Arms. Expertly Designed in the UK for intensive daily use...

Inc VAT

Exc VAT

£149.00

£124.17

Colour - Charcoal Grey

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Ergonomic Charcoal Operator Chair with Integrated Arms

Achieve a perfect balance of professional styling and uncompromised mechanical performance. This charcoal grey operator chair is engineered to provide targeted spinal support, ensuring users remain comfortable throughout long administrative sessions or study periods.

The Cobolt Advantage

  • Independent Back Rake Adjustment: Gain total control over your reclining angle. Unlike standard chairs where the seat and back move together, this model allows you to tilt the backrest independently and lock it in your preferred position for focused desk work.
  • Precision Spinal Support: The manual back height adjustment is a critical ergonomic feature. It allows you to raise or lower the backrest so the contoured lumbar padding aligns perfectly with your lower spine, reducing the risk of musculoskeletal fatigue.
  • Grounded Arm Support: The integrated fixed armrests provide a stable and permanent platform for the elbows and forearms. This consistent support helps dissipate tension in the shoulders and neck, preventing repetitive strain injuries.

Certified Durability & Style

  • Heavy-Duty Charcoal Upholstery: The seat and back are wrapped in a high-abrasion, commercial-grade charcoal fabric. This neutral material is designed to resist pilling and staining, maintaining its professional look in high-traffic suites.
  • EN 1335 Compliance: This chair meets strict EN 1335-1:2000 and EN 1335-2:2018 criteria. It has been independently verified to meet the structural and safety requirements for commercial office seating.
  • High-Performance Gas Lift: Equipped with a precision gas strut that provides a 110mm height range, ensuring users can keep their feet flat for optimal blood flow and pelvic alignment.

The Cobolt Standard

  • Free Mainland UK Delivery: We handle the heavy lifting of logistics. Every charcoal task chair includes Free Mainland UK Delivery, ensuring your facility budget is used efficiently on high-quality equipment.
  • 50 Years of Mastery: We leverage five decades of B2B furniture pedigree to select essential equipment engineered to survive the relentless, multi-user reality of the British public sector.
  • British Design Heritage: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Where is the Fixed-Arm Charcoal Operator Chair best utilised?

The Charcoal Fabric Operator Chair is the primary specification for School Reception Areas, University IT Suites, and Corporate Hot-Desking Zones. Its sophisticated neutral finish makes it a popular choice for Healthcare Administrative Areas and professional Consultancy Offices.

Key Features

  • Independent Back Rake Control — Backrest angle can be adjusted separately from the seat and locked in multiple positions.
  • Precision Back Height Adjustment — Allows the seat back to be raised and lowered to target the lumbar region specifically.
  • Contoured Seat Pan — High-density foam designed to distribute weight and increase comfort during long sittings.
  • Robust Fixed Arms — Provides a permanent support platform for the upper body to reduce shoulder muscle tension.
  • 110kg Maximum Capacity — Robustly built for commercial environments and daily professional usage.
  • EN 1335 Compliance — Independently certified to European standards for office chair safety and ergonomic dimensions.
  • Reinforced Five-Star Base — Fitted with high-quality swivel castors for effortless mobility on all office floor types.
  • Designed in the UK — Engineered to meet the specific functional and aesthetic standards of the British market.
Warranty icon
3-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Workplace Wellbeing

  • B2B Quality Focus: We provide professional-grade furniture intended for high-traffic use in educational and business facilities, moving beyond light-duty retail products.
  • Compliance Assurance: Our adherence to EN 1335 ensures that your institution meets necessary health and safety benchmarks for workstation ergonomics.
  • Specialist Logistics: Chairs are dispatched via professional networks to ensure they arrive securely and ready for rapid campus setup.

Certified Security. Structural Reliability.

  • The Gas Lift Height Adjustment is tested for long-term longevity, ensuring seat height remains stable without slipping under load.
  • Complies with EN 1335 Standards, meaning the chair has been independently verified to remain stable and safe under commercial usage.
  • The Back Rake Locking Mechanism provides a secure, static backrest, essential for preventing posture damage during high-focus tasks.
  • Features an Ergonomically Contoured Backrest that encourages correct spinal alignment, reducing the risk of long-term lower back complaints.
  • This operator chair is protected by our 3-year commercial warranty, covering all mechanical parts and structural integrity under normal office usage.

A professional Charcoal Grey fabric operator chair featuring integrated fixed arms, independent back rake adjustment, and full EN 1335 certification.

Weight Capacity
110kg
Standard
EN 1335
Guarantee
3 Years
Specification
Dimensions
Purpose / Benefit
Total Height
895mm - 1005mm
Variable range to ensure proper spinal support for users of different statures
Seat Height
460mm - 570mm
Ensures the user can maintain an ergonomic 90-degree angle at the knees
Seat Width & Depth
480mm(W) x 445mm(D)
Contoured seat pan increases comfort during long periods of administrative work
Backrest Dimensions
480mm(H) x 450mm(W)
Wide backrest surface provides reliable support across the mid and lower spine
Total Unit Width
480mm
Compact format designed to fit within standard workstation zones
Tilt Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple ergonomic positions
Weight
13.6kg
Solid commercial build quality ensuring stability and daily resilience
Finish
Charcoal Grey Fabric
High-abrasion neutral upholstery designed for institutional and commercial longevity
Origin
Designed in the UK
Refining ergonomic standards for the British workplace environment

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 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.

Frequently Asked Questions

1. What is "Independent Back Rake Adjustment"?

A: This feature allows you to tilt the angle of the backrest independently of the seat pan. You can lock it in various positions to support an upright typing posture or a slightly reclined reading angle.

2. Will the charcoal grey fabric withstand heavy daily use?

A: Yes. The chair is upholstered in high-abrasion commercial fabric. Charcoal is a highly practical choice for high-traffic environments as it resists showing marks while maintaining a professional appearance.

3. Why is EN 1335 certification important for health and safety compliance?

A: EN 1335 is the European benchmark for office work chairs. Compliance ensures the chair provides correct ergonomic support and stability, helping institutions meet their duty of care for workstation wellbeing.

4. Is the backrest height adjustable on this charcoal model?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back for targeted lumbar support.

5. What is the maximum user weight for this chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the industry standard for daily commercial office seating.

6. Will the armrests fit under a standard school office desk?

A: Absolutely. The chair is designed with standard UK workstation dimensions in mind. Most desks are 720-750mm high, and this chair will comfortably tuck underneath most work surfaces when not in use.

7. Is assembly difficult once it arrives?

A: Not at all. The chair arrives with clear, step-by-step instructions and all the necessary fixings. Most users find they can have it assembled and ready for work in approximately 15 minutes.

8. What exactly does the 3-year warranty cover?

A: Our 3-year commercial warranty provides comprehensive cover for all mechanical components—including the gas lift and tilt mechanisms—and any structural frame defects under normal office conditions.

Overview

Product Overview: Ergonomic Charcoal Operator Chair with Integrated Arms

Achieve a perfect balance of professional styling and uncompromised mechanical performance. This charcoal grey operator chair is engineered to provide targeted spinal support, ensuring users remain comfortable throughout long administrative sessions or study periods.

The Cobolt Advantage

  • Independent Back Rake Adjustment: Gain total control over your reclining angle. Unlike standard chairs where the seat and back move together, this model allows you to tilt the backrest independently and lock it in your preferred position for focused desk work.
  • Precision Spinal Support: The manual back height adjustment is a critical ergonomic feature. It allows you to raise or lower the backrest so the contoured lumbar padding aligns perfectly with your lower spine, reducing the risk of musculoskeletal fatigue.
  • Grounded Arm Support: The integrated fixed armrests provide a stable and permanent platform for the elbows and forearms. This consistent support helps dissipate tension in the shoulders and neck, preventing repetitive strain injuries.

Certified Durability & Style

  • Heavy-Duty Charcoal Upholstery: The seat and back are wrapped in a high-abrasion, commercial-grade charcoal fabric. This neutral material is designed to resist pilling and staining, maintaining its professional look in high-traffic suites.
  • EN 1335 Compliance: This chair meets strict EN 1335-1:2000 and EN 1335-2:2018 criteria. It has been independently verified to meet the structural and safety requirements for commercial office seating.
  • High-Performance Gas Lift: Equipped with a precision gas strut that provides a 110mm height range, ensuring users can keep their feet flat for optimal blood flow and pelvic alignment.

The Cobolt Standard

  • Free Mainland UK Delivery: We handle the heavy lifting of logistics. Every charcoal task chair includes Free Mainland UK Delivery, ensuring your facility budget is used efficiently on high-quality equipment.
  • 50 Years of Mastery: We leverage five decades of B2B furniture pedigree to select essential equipment engineered to survive the relentless, multi-user reality of the British public sector.
  • British Design Heritage: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Features & Benefits

Where is the Fixed-Arm Charcoal Operator Chair best utilised?

The Charcoal Fabric Operator Chair is the primary specification for School Reception Areas, University IT Suites, and Corporate Hot-Desking Zones. Its sophisticated neutral finish makes it a popular choice for Healthcare Administrative Areas and professional Consultancy Offices.

Key Features

  • Independent Back Rake Control — Backrest angle can be adjusted separately from the seat and locked in multiple positions.
  • Precision Back Height Adjustment — Allows the seat back to be raised and lowered to target the lumbar region specifically.
  • Contoured Seat Pan — High-density foam designed to distribute weight and increase comfort during long sittings.
  • Robust Fixed Arms — Provides a permanent support platform for the upper body to reduce shoulder muscle tension.
  • 110kg Maximum Capacity — Robustly built for commercial environments and daily professional usage.
  • EN 1335 Compliance — Independently certified to European standards for office chair safety and ergonomic dimensions.
  • Reinforced Five-Star Base — Fitted with high-quality swivel castors for effortless mobility on all office floor types.
  • Designed in the UK — Engineered to meet the specific functional and aesthetic standards of the British market.
Warranty icon
3-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Workplace Wellbeing

  • B2B Quality Focus: We provide professional-grade furniture intended for high-traffic use in educational and business facilities, moving beyond light-duty retail products.
  • Compliance Assurance: Our adherence to EN 1335 ensures that your institution meets necessary health and safety benchmarks for workstation ergonomics.
  • Specialist Logistics: Chairs are dispatched via professional networks to ensure they arrive securely and ready for rapid campus setup.

Safety & Warranty

Certified Security. Structural Reliability.

  • The Gas Lift Height Adjustment is tested for long-term longevity, ensuring seat height remains stable without slipping under load.
  • Complies with EN 1335 Standards, meaning the chair has been independently verified to remain stable and safe under commercial usage.
  • The Back Rake Locking Mechanism provides a secure, static backrest, essential for preventing posture damage during high-focus tasks.
  • Features an Ergonomically Contoured Backrest that encourages correct spinal alignment, reducing the risk of long-term lower back complaints.
  • This operator chair is protected by our 3-year commercial warranty, covering all mechanical parts and structural integrity under normal office usage.

Specification Dimensions

A professional Charcoal Grey fabric operator chair featuring integrated fixed arms, independent back rake adjustment, and full EN 1335 certification.

Weight Capacity
110kg
Standard
EN 1335
Guarantee
3 Years
Specification
Dimensions
Purpose / Benefit
Total Height
895mm - 1005mm
Variable range to ensure proper spinal support for users of different statures
Seat Height
460mm - 570mm
Ensures the user can maintain an ergonomic 90-degree angle at the knees
Seat Width & Depth
480mm(W) x 445mm(D)
Contoured seat pan increases comfort during long periods of administrative work
Backrest Dimensions
480mm(H) x 450mm(W)
Wide backrest surface provides reliable support across the mid and lower spine
Total Unit Width
480mm
Compact format designed to fit within standard workstation zones
Tilt Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple ergonomic positions
Weight
13.6kg
Solid commercial build quality ensuring stability and daily resilience
Finish
Charcoal Grey Fabric
High-abrasion neutral upholstery designed for institutional and commercial longevity
Origin
Designed in the UK
Refining ergonomic standards for the British workplace environment

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 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

Frequently Asked Questions

1. What is "Independent Back Rake Adjustment"?

A: This feature allows you to tilt the angle of the backrest independently of the seat pan. You can lock it in various positions to support an upright typing posture or a slightly reclined reading angle.

2. Will the charcoal grey fabric withstand heavy daily use?

A: Yes. The chair is upholstered in high-abrasion commercial fabric. Charcoal is a highly practical choice for high-traffic environments as it resists showing marks while maintaining a professional appearance.

3. Why is EN 1335 certification important for health and safety compliance?

A: EN 1335 is the European benchmark for office work chairs. Compliance ensures the chair provides correct ergonomic support and stability, helping institutions meet their duty of care for workstation wellbeing.

4. Is the backrest height adjustable on this charcoal model?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back for targeted lumbar support.

5. What is the maximum user weight for this chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the industry standard for daily commercial office seating.

6. Will the armrests fit under a standard school office desk?

A: Absolutely. The chair is designed with standard UK workstation dimensions in mind. Most desks are 720-750mm high, and this chair will comfortably tuck underneath most work surfaces when not in use.

7. Is assembly difficult once it arrives?

A: Not at all. The chair arrives with clear, step-by-step instructions and all the necessary fixings. Most users find they can have it assembled and ready for work in approximately 15 minutes.

8. What exactly does the 3-year warranty cover?

A: Our 3-year commercial warranty provides comprehensive cover for all mechanical components—including the gas lift and tilt mechanisms—and any structural frame defects under normal office conditions.

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