| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 660 x 680 x 1080 mm | |
|---|---|---|
| Seat width | 520 mm | |
| Seat depth | 480 mm | |
| Adjustable seat height range | 520 mm | |
| Backrest height | 620 mm | |
| Backrest width | 500 mm | |
| Five-star base diameter | 700 mm | |
| Armrest height above seat | 220 mm | |
| Caster diameter | 60 mm | |
| Seat cushion thickness | 80 mm | |
| Lumbar cutout width | 380 mm | |
| Chrome base leg thickness | 2 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 | 22 kg | |
|---|---|---|
| Maximum static user load | 150 kg | |
| Gas lift vertical travel | 100 mm | |
| Backrest recline angle range | 115degrees | |
| Caster rolling durability | 40000 cycles | |
| Seat foam density | 45 kg/m³ | |
| Seam stitch pitch | 8 stitches per inch | |
| Warranty period | 3 years | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Outer back shell | 12 mm thick bent plywood with high-gloss rosewood veneer finish | |
|---|---|---|
| Seat upholstery | 1.2 mm thick PU leather over high resilience foam | |
| Backrest padding | 50 mm thick high resilience polyurethane foam | |
| Five-star base | Polished chrome-plated 1.5 mm wall thickness steel tubing | |
| Tilt mechanism | 3 mm thick stamped black powder-coated steel | |
| Pneumatic gas lift | Class 3 chrome-plated steel gas lift, 50 mm outer diameter | |
| Armrests | Integral bentwood shell with matching PU leather padded top surface | |
| Casters | 60 mm diameter twin-wheel black nylon casters with black rubber rolling surface | |
| Control levers | Reinforced black nylon levers for height adjustment and tilt lock | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Five-star Base Material Thickness | Metal base wall 3.5 mm; diameter 700 mm |
Adjustment / rotation / tilt / mobility / storage features
| 360-degree swivel rotation | Full rotation enabled by central gas lift and base bearing, allows free reorientation without moving the chair base | |
|---|---|---|
| Pneumatic seat height adjustment | Side-operated lever controls gas lift to set seat height between 420 and 520 mm, aligns to 760 mm standard office desk heights | |
| Recline tilt with tension adjustment | Under-seat knob adjusts recline resistance for user weight, back tilts up to 20 degrees from upright position with lockable upright position | |
| Fixed integrated armrest support | Curved fixed armrests provide forearm support during typing and meetings, no independent height or width adjustment | |
| Smooth rolling mobility | Twin-wheel casters roll freely on hard flooring and low-pile carpet without catching or marking floor surfaces | |
| Lumbar ventilation cutout | Horizontal open gap between seat and upper back reduces heat buildup during long periods of seated work | |
| Contoured seat cushion | Waterfall front seat edge reduces pressure on back of knees and improves lower leg circulation during extended sitting | |
| 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 | 720 x 640 x 580 mm | |
| Gross shipping weight | 26 kg | |
| Carton CBM volume | 0.27 CBM | |
| assembly time | 25 minutes | |
| 20ft container loading quantity | 220 units | |
| 40ft HQ container loading quantity | 540 units | |
| Packaging protection | 5 mm thick expanded polystyrene corner protection with 0.1 mm polyethylene bag to prevent scratch damage during transit; procurement engineering, not supplier-measured data | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Executive private office use | Premium bentwood and leather appearance suits senior manager private offices, provides professional aesthetic and all-day comfort | |
|---|---|---|
| Conference and meeting room installation | Mid-back design supports meeting durations of 3 hours without blocking sightlines across conference tables | |
| Home office workstation | Polished wood finish complements residential and home office decor, with full office chair adjustability for remote work use | |
| Boardroom visitor seating | Formal appearance is suitable for boardroom visitor and meeting guest seating, matches high-end wooden office furniture collections | |
| Hard floor and low-pile carpet environments | Soft surface caster material prevents floor scratching on wood, tile, and low-pile carpet without needing separate chair mats | |
| Recommended matching furniture | Pairs with 760 mm height executive desks, conference tables and wooden office storage units with matching rosewood veneer finishes | |
| 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 office chair dimensional safety and performance requirements for commercial work seating | |
|---|---|---|
| EN 1335-2:2018 | Applies to structural stability, strength and durability testing for office work chairs | |
| EN 1335-3:2009 | Applies to test methods for verifying office chair structural performance |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applies to general purpose office chair strength, durability and stability requirements for commercial installation | |
|---|---|---|
| Base static load rating | 1136 kg |
Standards applicable to China-market projects
| GB/T 3326-2016 | Applies to dimensional measurement and tolerance requirements for office seating, used for incoming dimension inspection | |
|---|---|---|
| GB/T 24821-2009 | Applies to office chair general technical requirements for structural stability and safety | |
| GB 18580-2017 | Applies to formaldehyde emission limits for plywood components, required E1 grade or better for indoor use |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applies to dimensional measurement and tolerance requirements for office seating, used for incoming dimension inspection; 2. GB/T 24821-2009: Applies to office chair general technical requirements for structural stability and safety; 3. GB 18580-2017: Applies to formaldehyde emission limits for plywood components, required E1 grade or better for indoor use; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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