| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 520 x 540 x 880 mm | |
|---|---|---|
| Seat width | 470 mm | |
| Seat depth | 430 mm | |
| Seat height range | 420 mm to 520 mm | |
| Backrest height | 380 mm | |
| Backrest width | 440 mm | |
| Five-star base diameter | 600 mm | |
| Gas lift diameter | 50 mm | |
| Caster diameter | 50 mm | |
| Seat cushion thickness | 50 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
| Product net weight | 11 kg | |
|---|---|---|
| Maximum recommended user weight | 110 kg | |
| Backrest static load capacity | 136 kg | |
| Caster rolling durability | 40000 cycles | |
| Gas lift cycle life | 100000 cycles | |
| Upholstery abrasion resistance | 50000 Martindale cycles | |
| Seat foam density | 45 kg/m³ | |
| 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 |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back support shell | 12mm thick bent laminated plywood with natural oak veneer finish | |
|---|---|---|
| Seat upholstery | 1.2mm thick black polyurethane (PU) leather | |
| Backrest upholstery (front contact surface) | 1.2mm thick black polyurethane (PU) leather | |
| Backrest rear face | Natural oak veneer with clear matte lacquer | |
| Internal seat/back cushion foam | High resilience polyurethane foam, 50mm seat thickness, 30mm back thickness | |
| Gas lift column | Chrome-plated steel, Class 2 rating, 50mm outer diameter | |
| Five-star base | 1.5mm thick chrome-plated steel, polished finish | |
| Casters | Black nylon twin-wheel casters, hard-floor suitable | |
| Height adjustment lever | Glass-filled nylon black paddle lever | |
| Seat tilt mechanism | 2.5mm thick steel plate tilt mechanism with tension adjustment | |
| Seam construction | Even stitched PU upholstery with 8mm seam pitch | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Pneumatic seat height adjustment | 100mm vertical adjustment via right-side paddle lever, locks at any height within 520 mm seat height range, no tools required for operation | |
|---|---|---|
| Seat tilt function | 12° maximum backward tilt with adjustable tension control, upright lock position available via under-seat tension knob | |
| Caster mobility | Smooth rolling on all hard floor and low-pile carpet surfaces, 360° caster rotation for multidirectional movement without floor scratching | |
| Armless design clearance | No protruding armrests, allowing full tuck under 600mm deep desk surfaces to save space when not in use | |
| Compact footprint | 600mm diameter base allows use in small home office, study or compact workstation spaces without excessive floor space occupation | |
| Pneumatic lift stroke | 100 mm | |
| 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
| Number of shipping cartons | 1 carton | |
|---|---|---|
| Shipping carton dimensions | 630 x 580 x 320 mm | |
| Gross shipping weight | 13 kg | |
| Shipping volume per unit | 0.12 CBM | |
| Required assembly time | 20 minutes | |
| 20ft GP container loading quantity | 220 units | |
| 40ft HQ container loading quantity | 540 units | |
| Packaging protection | Polyethylene wrap for upholstered parts, expanded polystyrene corner protection for bentwood shell, hardware kit in sealed polybag | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Home office workstations | Compact armless design fits small desk setups in apartments and home work spaces, tucks fully under standard desks when not in use | |
|---|---|---|
| Open plan office task seating | Lightweight swivel mobility suitable for hot-desking, short-term workstations and collaborative office zones | |
| Study and student desk use | Adjustable seat height fits teenage and adult users at standard study desks, with easy to clean PU upholstery for daily student use | |
| Meeting and conference room seating | Unobtrusive bentwood aesthetic matches modern Scandinavian and minimalist meeting rooms, with 360° swivel for easy conversation access | |
| Retail and reception counter seating | Adjustable height works with medium-height reception counters, with durable caster base for staff movement during customer service | |
| Creative studio workspaces | Lightweight construction and modern bentwood aesthetic complements creative studio environments, providing mobile seating for flexible work layouts | |
| 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 | European standard for office work chairs: dimensional requirements, for confirming ergonomic fit for desk use | |
|---|---|---|
| EN 1335-2:2018 | European standard for office work chairs: safety requirements, for structural safety verification during procurement | |
| EN 1335-3:2009 | European standard for office work chairs: test methods, for third-party inspection reference |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | North American standard for office chairs: general purpose office chair safety and performance requirements, for load and durability testing reference | |
|---|---|---|
| Seat static load capacity | 600 kg |
Standards applicable to China-market projects
| GB/T 3326-2016 | Recommended Chinese national standard for office furniture: chair dimensional stability and sizing, for procurement dimensional verification | |
|---|---|---|
| GB/T 10357.2-2013 | Recommended Chinese national standard for furniture mechanical performance testing: chair and stool static load testing, for incoming quality inspection | |
| GB/T 10357.3-2013 | Recommended Chinese national standard for furniture mechanical performance testing: chair and stool durability testing, for service life verification |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Recommended Chinese national standard for office furniture: chair dimensional stability and sizing, for procurement dimensional verification; 2. GB/T 10357.2-2013: Recommended Chinese national standard for furniture mechanical performance testing: chair and stool static load testing, for incoming quality inspection; 3. GB/T 10357.3-2013: Recommended Chinese national standard for furniture mechanical performance testing: chair and stool durability testing, for service life verification; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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