| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 610 x 686 x 940 mm | |
|---|---|---|
| Seat width | 480 mm | |
| Seat depth | 430 mm | |
| Maximum seat height (top of cushion) | 597 mm | |
| Minimum seat height (top of cushion) | 445 mm | |
| Backrest height | 470 mm | |
| Backrest width | 450 mm | |
| Five-star base spread diameter | 640 mm | |
| Gas lift column diameter | 50 mm | |
| Caster wheel diameter | 50 mm | |
| Seat edge thickness | 60 mm | |
| Bentwood shell edge trim width | 12 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
| Net weight range | 19.8 kg | |
|---|---|---|
| Recommended static load capacity | 136 kg | |
| Seat cushion foam density | 45 kg/m³ | |
| Backrest padding foam density | 35 kg/m³ | |
| Caster rolling durability (cycle count) | 40000 cycles | |
| Seat foam rebound rate | 45 % | |
| Recommended user weight limit | 136 kg | |
| Static load test threshold for five-star base | 1136 kg | |
| Gas lift vertical adjustment stroke | 152 mm | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and backrest upholstery | 1.0 mm thick black polyurethane (PU) faux leather, smooth matte finish, stain-resistant surface | |
|---|---|---|
| Seat cushion core | 50 mm thick high-resiliency polyurethane foam, density 45kg/m³, molded to contoured seat shape | |
| Backrest padding | 20 mm thick soft polyurethane foam, density 35kg/m³, bonded to bentwood shell | |
| Structural back and seat shell | 12 mm thick bent plywood, walnut dark wood grain veneer finish, exposed light natural wood edge trim | |
| Five-star swivel base | 2.0 mm thick brushed aluminum alloy, polished matte metallic finish, five radial legs | |
| Pneumatic gas lift | Chrome-plated steel cylinder, Class 3 safety rating, 50mm outer diameter | |
| Dual-wheel casters | 60 mm diameter polyurethane (PU) tread with polypropylene inner hub, blue/black translucent housing, non-marking for hard floors | |
| Height adjustment lever | Black reinforced nylon lever, positioned under right side of seat, connected to gas lift actuation mechanism | |
| Seat mechanism plate | 2.5 mm thick stamped steel, black powder-coated finish, connects seat shell to gas lift | |
| Upholstery seam construction | Stitched perimeter seam along bentwood edge, 8 stitches per inch seam pitch, matching black thread | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame |
Adjustment / rotation / tilt / mobility / storage features
| Pneumatic seat height adjustment | 152 mm vertical adjustment range controlled by right-side under-seat lever, allowing seat height to match standard 760 mm desk heights | |
|---|---|---|
| Smooth omnidirectional rolling | Five dual-wheel casters allow free movement on hard floors and low-pile carpet, non-marking PU tread prevents floor damage | |
| Contoured lumbar support | Curved backrest shape provides fixed mid-lumbar support aligned to natural lower back curve during upright seated work, no adjustable lumbar pad | |
| Under-desk tuck capability | Armless design allows full chair tuck under standard 600mm deep desk surfaces when not in use, saving floor space | |
| Fixed tilt resistance rocking | 12° backward tilt range with fixed tension resistance, no multi-position tilt lock, for gentle rocking during seated tasks | |
| No armrest interference | Absence of armrests eliminates obstruction for side access to work surfaces, cross-legged seating, or use with height-adjustable standing desks in lowered position | |
| 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
| Knock-down (KD) packaging configuration | 1 carton per chair, components separated for compact shipping: backrest/seat assembly, five-star base, gas lift, casters, hardware kit, assembly instruction sheet | |
|---|---|---|
| Export carton dimensions | 700 x 650 x 400 mm | |
| Gross packed weight | 14 kg | |
| Cubic volume per carton | 0.182 CBM | |
| assembly time | 25 minutes | |
| 20ft GP container loading quantity | 174 units | |
| Packaging material construction | 5-layer corrugated export carton with internal foam edge protectors and polybag wrapping for chair components | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set | |
| Reference Carton Dimensions | 850× 420× 720 mm |
Recommended spaces / users / usage modes
| Home office workspace | Ideal for compact home office desks and workstations, armless design saves space and matches mid-century modern interior aesthetics with walnut wood and black upholstery | |
|---|---|---|
| Open-plan office task seating | Suitable for hot-desking, meeting rooms, and open office areas, swivel and rolling function supports easy movement between work zones, easy to clean PU upholstery for high-traffic use | |
| Vanity or dressing table seating | Adjustable height and compact armless form fits standard vanity tables, curved padded seat provides comfort for extended grooming or makeup application, rolling casters allow easy repositioning | |
| Conference and meeting room seating | Slim armless profile allows high-density seating around conference tables, swivel function supports natural interaction during meetings, neutral black/walnut finish coordinates with most conference room furniture | |
| Co-working and flexible workspace | Durable metal base and casters withstand frequent reconfiguration and multi-user rotation, armless design accommodates a wide range of user body types without armrest width restrictions | |
| Small apartment multi-use space | Compact dimensions and ability to tuck fully under desks make it suitable for dual-purpose living/working spaces in small urban apartments, reducing visual clutter when not in 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 | Applies to dimensional, safety, and strength requirements for office work chairs, including seat dimensions, backrest dimensions, and stability for task seating | |
|---|---|---|
| EN 1335-2:2018 | Applies to performance and strength test methods for office chairs, including static load, fatigue, and durability testing of seats, backrests, and bases | |
| EN 1021-1:2014 | Applies to upholstered furniture flammability (cigarette ignition resistance) for seating components, required for European commercial office furniture compliance |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applies to general-purpose office chair safety and performance standards, including static load testing, durability cycles for mechanisms, casters, and base strength, and stability testing for armless task chairs |
|---|
Standards applicable to China-market projects
| GB/T 3326-2016 | Applies to dimensional measurement and fit requirements for office desk chairs, including seat height range, functional clearances, and dimensional stability for seating products | |
|---|---|---|
| GB/T 35607-2017 | Applies to volatile organic compound (VOC) emission limits for upholstered furniture, including PU upholstery and foam components, for indoor air quality compliance in Chinese markets | |
| GB 28007-2011 | Applies to general safety requirements for office seating, including structural stability, edge safety, and strength requirements for chair bases and mechanisms |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applies to dimensional measurement and fit requirements for office desk chairs, including seat height range, functional clearances, and dimensional stability for seating products; 2. GB/T 35607-2017: Applies to volatile organic compound (VOC) emission limits for upholstered furniture, including PU upholstery and foam components, for indoor air quality compliance in Chinese markets; 3. GB 28007-2011: Applies to general safety requirements for office seating, including structural stability, edge safety, and strength requirements for chair bases and mechanisms; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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