| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall assembled dimensions | 660 x 660 x 940 mm | |
|---|---|---|
| Seat width | 500 mm | |
| Seat depth | 460 mm | |
| Seat height adjustment range | 480 to 560 mm | |
| Backrest height above seat | 480 mm | |
| 5-star base diameter | 650 mm | |
| Caster diameter | 65 mm | |
| Gas lift travel stroke | 100 mm | |
| Seat cushion thickness | 80 mm | |
| Backrest cushion thickness | 60 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 | 16 kg | |
|---|---|---|
| Recommended static weight capacity | 136 kg | |
| Seat foam density | 40 kg/m³ | |
| Foam rebound rate | 45% | |
| Upholstery abrasion resistance | 50000 Martindale cycles | |
| Tilt/recline angle range | 12 degrees | |
| Caster rolling durability | 100000 cycles | |
| Static load rating for 5-star base | 1136 kg | |
| Gas lift service life | 60000 height adjustment cycles | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Outer side frame and shell | 18mm thick bent walnut plywood with clear matte lacquer finish | |
|---|---|---|
| Seat and back upholstery | 1.0mm thick ivory PU faux leather with stitched vertical seam details | |
| Internal seat/back support panel | 12mm thick curved plywood substrate | |
| Seat and back padding | High-density polyurethane foam, fire-retardant to CAL TB 117 standards | |
| Central height adjustment column | Chrome-plated Class 3 steel gas lift, 50mm outer diameter | |
| Tilt and height control mechanism | 3mm thick powder-coated steel swivel-tilt plate with tension adjustment | |
| 5-star caster base | Polished die-cast aluminum, 3mm wall thickness at leg cross-section | |
| Rolling casters | 65mm diameter black PU tread with polypropylene wheel housing and steel stem | |
| Control levers | Black nylon-coated steel adjustment levers for height and tilt tension | |
| Edge trim | Matching walnut veneer edge banding along plywood shell perimeter | |
| 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
| 360-degree swivel rotation | Full rotation around central gas lift axis with no lock position | |
|---|---|---|
| Pneumatic seat height adjustment | Lever-operated 80mm height adjustment from 480mm to 560mm seat height | |
| Swivel-tilt rocking function | 12-degree backward recline with adjustable tension control | |
| Dual-wheel caster mobility | Smooth rolling on hard floors and low-pile carpet with 360-degree wheel rotation | |
| Contoured mid-back support | Fixed curved backrest shaped to support natural lumbar curve without adjustable lumbar pad | |
| Armless clearance design | No protruding armrests to allow tucking fully under desk surfaces with 600mm minimum knee height clearance | |
| Tilt tension adjustment | Rotary knob under seat adjusts recline resistance from 45kg to 113kg user weight | |
| Fixed upright position lock | Mechanism locks in full upright seating position for focused task work | |
| 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 carton dimensions | 700 x 650 x 550 mm | |
|---|---|---|
| Reference gross weight per carton | 18 kg | |
| Reference carton volume | 0.25 CBM | |
| Required assembly time | 30 minutes | |
| 20GP container loading quantity | 220 units | |
| 40HQ container loading quantity | 540 units | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set | |
| Reference Packaged Gross Weight | 23 kg/set | |
| Indicative 20GP Loading | 135 sets at 85% space utilization |
Recommended spaces / users / usage modes
| Home office workspaces | Slim armless profile and mid-century walnut/ivory finish complements modern residential decor, tucks fully under small home desks to save space | |
|---|---|---|
| Open-plan commercial offices | Compact footprint and durable construction suit hot-desking and shared workstations, swivel and mobility support active task work between desk zones | |
| Conference and meeting rooms | Sleek armless design allows flexible seating around conference tables without armrest interference, 360 swivel supports engagement with all meeting participants | |
| Small apartment studio work nooks | Narrow 660mm width fits compact desk setups in limited floor space, light visual profile from bentwood frame avoids bulky appearance | |
| Executive guest seating | Polished aluminum base and walnut/ivory upholstery presents a premium aesthetic for private office guest seating in front of executive desks | |
| Co-working flexible spaces | Rolling casters and height adjustment support varied user heights and quick reconfiguration of shared work areas, durable faux leather withstands frequent 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 | European standard for office work chairs: dimensions, applies to seat height, depth and backrest dimension requirements for ergonomic task seating | |
|---|---|---|
| EN 1335-2:2018 | European standard for office work chairs: safety requirements, applies to structural stability, strength and durability testing for procurement verification | |
| EN 1335-3:2018 | European standard for office work chairs: test methods, provides standardized procedures to verify strength, stability and fatigue performance of chair components |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | North American standard for office chairs: general purpose, defines static load, durability, stability and dimensional requirements for commercial task chairs, recommended for commercial procurement acceptance | |
|---|---|---|
| ANSI/BIFMA X5.11-2015 | Standard for office chairs for large users, applicable if higher weight capacity is specified, provides testing protocols for weights over 136kg |
Standards applicable to China-market projects
| GB/T 3326-2016 | Recommended standard for furniture: desk, chair and stool dimensional coordination, applies to overall and seat dimension tolerances for procurement acceptance | |
|---|---|---|
| GB/T 35607-2017 | Recommended standard for green product assessment: furniture, applies to formaldehyde emission and harmful substance limits for plywood, foam and upholstery materials | |
| GB 28007-2011 | Mandatory national standard for general technical requirements of children's furniture; applicable if chair is specified for youth workspaces, requires rounded edges and restricted hazardous materials |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Recommended standard for furniture: desk, chair and stool dimensional coordination, applies to overall and seat dimension tolerances for procurement acceptance; 2. GB/T 35607-2017: Recommended standard for green product assessment: furniture, applies to formaldehyde emission and harmful substance limits for plywood, foam and upholstery materials; 3. GB 28007-2011: Mandatory national standard for general technical requirements of children's furniture; applicable if chair is specified for youth workspaces, requires rounded edges and restricted hazardous materials; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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