| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 580 x 620 x 990 mm | |
|---|---|---|
| Seat width | 490 mm | |
| Seat depth | 420 mm | |
| Maximum seat height (floor to seat top) | 530 mm | |
| Backrest width | 450 mm | |
| Backrest height (seat to back top) | 510 mm | |
| Seat cushion thickness | 60 mm | |
| Armrest height above seat | 180 mm | |
| Five-star base diameter | 620 mm | |
| Minimum seat height (floor to seat top) | 430 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 static load capacity | 120 kg | |
|---|---|---|
| Net weight | 13.5 kg | |
| Recommended user height range | 1800 mm | |
| Recline angle maximum | 125° | |
| Gas lift stroke | 100 mm | |
| 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 | |
| Caster Rolling Durability Reference | Acceptance target 30000 cycles |
Core acceptance fields · Panels / hardware / frame / upholstery
| Backrest frame | Reinforced black nylon frame | |
|---|---|---|
| Backrest support surface | Breathable woven polyester mesh | |
| Integrated lumbar support | Fixed molded plastic lumbar contour | |
| Seat cushion core | High-density molded polyurethane foam | |
| Seat upholstery | Tight-wear polyester fabric cover | |
| Armrests | Fixed loop-style black nylon armrests | |
| Central support column | Steel pneumatic gas lift cylinder | |
| Five-star base | Glass-filled nylon star base | |
| Casters | 50mm dual-wheel nylon casters | |
| Tilt mechanism plate | 2.5mm thick stamped steel butterfly chassis | |
| Seam stitch pitch | 8 stitches per inch | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Pneumatic seat height adjustment | Under-seat lever operated, 100mm travel between 530 mm seat height | |
|---|---|---|
| 360-degree swivel rotation | Full rotation around central gas column for multi-directional access | |
| Tilt and lock mechanism | Tilt tension adjustable, locks in upright 90° position, maximum 125° recline | |
| Fixed integrated lumbar support | Contoured support positioned for mid-back alignment, no adjustment required | |
| Smooth rolling mobility | Dual-wheel casters roll on hard floor and low-pile carpet without marking | |
| Waterfall seat edge | Curved front seat edge reduces thigh pressure during extended seating | |
| Fixed loop armrest support | Stable arm support fixed at 180mm above seat, no height or width adjustment | |
| 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 office workstations | Fits standard 760 mm height desks for daily employee task work | |
|---|---|---|
| Home office spaces | Compact footprint fits small home desk setups for remote work | |
| Conference and meeting rooms | Swivel and mobility support collaborative meeting use | |
| Cubicle work areas | Fixed armrests fit standard cubicle desk clearances without protrusion | |
| Training room seating | Durable construction supports frequent use by rotating users | |
| 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
| Office chair safety standard | EN 1335:2020 | |
|---|---|---|
| Office chair stability standard | EN 1335:2018 | |
| Office chair test method standard | EN 1335:2018 |
US and Canada office-furniture standards
| General purpose office chair standard | ANSI/BIFMA X2017 | |
|---|---|---|
| Caster performance requirement | ANSI/BIFMA X5.1 Clause 17 | |
| Gas lift performance requirement | ANSI/BIFMA X5.1 Clause 8 | |
| Caster rolling durability | 40000 cycles |
Standards applicable to China-market projects
| Office chair strength and durability standard | GB/T 3326 | |
|---|---|---|
| Office chair dimensional standard | GB/T 3327 | |
| Formaldehyde emission standard | GB 18584 |
This product must meet the following technical requirements: 1. Office chair strength and durability standard: GB/T 3326; 2. Office chair dimensional standard: GB/T 3327; 3. Formaldehyde emission standard: GB 18584; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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