| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (highest seat height) | 660 x 660 x 1100 mm | |
|---|---|---|
| Adjustable seat height range (seat to floor) | 530 mm | |
| Seat cushion dimensions | 520 x 520 mm | |
| Backrest total height (seat top to headrest top) | 720 mm | |
| Five-star caster base diameter | 700 mm | |
| Caster diameter | 60 mm | |
| Armrest height above seat | 220 mm | |
| Headrest dimensions | 280 x 150 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Backrest Padding Thickness | 70 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| Recommended maximum user weight | 160 kg | |
|---|---|---|
| Net weight (assembled) | 22 kg | |
| Seat cushion foam density | 50 kg/m³ | |
| Seat cushion foam rebound rate | 60% | |
| Upholstery abrasion resistance | 40000 double rubs | |
| Caster rolling durability | 100000 cycles | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ | |
| Upholstery Thickness / Abrasion Reference | 1.4 mm / 50000 cycles | |
| Five-star Base Static Load Reference | Acceptance target ≥120 kg; chair reference load 150 kg |
Core acceptance fields · Panels / hardware / frame / upholstery
| Backrest upholstery | Breathable polyester mesh | |
|---|---|---|
| Seat cushion core | Molded high-density polyurethane foam | |
| Seat upholstery cover | Wear-resistant polyester fabric | |
| Armrests | Reinforced polypropylene loop frame | |
| Five-star base | Glass-fiber reinforced nylon | |
| Gas lift cylinder | Chrome-plated steel Class 3 pneumatic lift | |
| Back support frame | Reinforced PA plastic inner frame | |
| Casters | Nylon twin-wheel casters | |
| Chassis mechanism | 2.5mm thick steel tilt plate | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Tilt Mechanism Plate Thickness | 2.5 mm cold-rolled steel |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | 100mm pneumatic stroke via under-seat lever | |
|---|---|---|
| Backrest tilt function | 135° recline with 3-position lock | |
| Swivel function | 360-degree unrestricted rotation around center column | |
| Headrest adjustment | 80mm height adjustment and 30° rotation | |
| Lumbar support | Fixed contoured dual-pad lower back support | |
| Caster mobility | Smooth 360-degree rolling on hard floors and low-pile carpet | |
| Tilt tension adjustment | Tension knob under seat for user weight calibration | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg | |
| Rotation / Mobility Configuration | 360° swivel with 5-caster multidirectional movement |
Verified carton / gross weight / assembly / loading data
| Reference Package Count | 1 set / 2 cartons | |
|---|---|---|
| Reference Assembly Time | 40 minutes per set | |
| Reference Carton Dimensions | 850× 420× 720 mm | |
| Reference Packaged Gross Weight | 23 kg/set | |
| Reference Carton Volume | 0.26 m³/set | |
| Indicative 20GP Loading | 135 sets at 85% space utilization | |
| Indicative 40HQ Loading | 320 sets at 85% space utilization |
Recommended spaces / users / usage modes
| Open-plan office workstations | Ergonomic split-back support for 8-hour daily desk work for office staff | |
|---|---|---|
| Home office workspaces | Compact footprint fits standard home desk setups for remote workers | |
| Small meeting and conference rooms | Swivel and mobility support for collaborative discussion seating | |
| Cubicle task workstations | Fixed armrests fit standard desk height cutouts for long typing sessions | |
| Computer and study rooms | Adjustable height suits teen and adult users for study or PC use | |
| Recommended Matching Desk Size | 2.4 m executive desk | |
| Reference Daily Use Duration | 8 hours/day; confirm by ergonomic testing |
EU Market Access Requirements* EN Standards
| EN 1335-1:2020 | Applicable to office chair dimensional safety and performance requirements for work seating | |
|---|---|---|
| EN 1335-2:2018 | Applicable to structural strength, durability and stability requirements for office chairs | |
| EN 1022:2018 | Applicable to stability testing for all domestic and contract seating |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applicable to general-purpose office chair strength, durability and structural safety testing | |
|---|---|---|
| Static load rating for five-star base | 1136 kg |
Standards applicable to China-market projects
| GB/T 38609-2020 | Applicable to office chair ergonomic design requirements for seat, back and armrest dimensions | |
|---|---|---|
| GB/T 3324-2017 | Applicable to general technical requirements for metal furniture structural stability | |
| GB/T 10357.3-2013 | Applicable to mechanical performance test methods for chair seating stability and durability |
This product must meet the following technical requirements: 1. GB/T 38609-2020: Applicable to office chair ergonomic design requirements for seat, back and armrest dimensions; 2. GB/T 3324-2017: Applicable to general technical requirements for metal furniture structural stability; 3. GB/T 10357.3-2013: Applicable to mechanical performance test methods for chair seating stability and durability; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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