| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (W x D x H, mid-height adjustment) | 540 x 580 x 880 mm | |
|---|---|---|
| Seat width (at widest point) | 480 mm | |
| Seat depth (front to back) | 440 mm | |
| Backrest width (at widest point) | 450 mm | |
| Backrest height (from seat pan to top edge) | 420 mm | |
| Seat height adjustment range (lowest to highest) | 530 mm | |
| 4-star base total width (prong tip to opposite tip) | 600 mm | |
| Gas lift cylinder outer diameter | 50 mm | |
| Seat cushion thickness (at thickest point) | 70 mm | |
| Backrest cushion thickness (at thickest point) | 50 mm | |
| Waterfall seat front edge overhang | 30 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 per unit (maximum) | 12 kg | |
|---|---|---|
| Maximum recommended static user load | 150 kg | |
| Seat foam density | 45 kg/m³ | |
| Seat foam rebound rate | 60% | |
| Upholstery abrasion resistance (double rubs, contract grade minimum) | 30000 | |
| Gas lift adjustment cycle durability | 100000 cycles | |
| Swivel mechanism 360° rotation durability | 60000 cycles | |
| Backrest foam density | 40 kg/m³ | |
| Upholstery abrasion resistance (double rubs) | 30000 | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and backrest contact surface upholstery | Beige smooth faux leather (PU) upholstery, stitched to inner support | |
|---|---|---|
| Seat and backrest outer shell | White rigid injection-molded polypropylene shell, wrapping side and rear edges of seat and back | |
| Seat internal support pan | 10mm thick multi-layer plywood panel, secured to under-seat mechanism | |
| Seat cushion padding | 70mm thick high resilience polyurethane foam, density 45kg/m³, with shaped waterfall front edge | |
| Backrest padding | 50mm thick high resilience polyurethane foam, density 40kg/m³, contoured for mild lumbar support | |
| Height adjustment lever | Black reinforced nylon lever, mounted under right side of seat pan | |
| Central gas lift cylinder | Class 3 chrome-plated steel pneumatic cylinder, 50mm outer diameter, 130mm stroke | |
| 4-star fixed base | 1.8mm thick polished chrome-plated steel four-prong base, with non-slip rubber floor protection pads at each prong tip | |
| Swivel bearing assembly | Steel ball bearing swivel joint between gas lift and seat mechanism, enabling 360-degree rotation | |
| Seat mechanism plate | 2.0mm thick stamped steel plate connecting seat pan to gas lift, supporting height adjustment control | |
| Upholstery stitching | Visible edge stitching with 8mm seam pitch, securing upholstery to shell and foam | |
| Base prong rubber pads | 3mm thick non-marking natural rubber pads, adhesively secured to each base prong tip |
Adjustment / rotation / tilt / mobility / storage features
| Pneumatic seat height adjustment | Side lever actuated gas lift adjusts seat height from 400mm to 530mm, with infinite lock at any position within stroke | |
|---|---|---|
| 360-degree swivel rotation | Central steel ball bearing allows full unobstructed 360-degree rotation of seat and back relative to fixed base | |
| Stationary fixed base design | Four-prong base without rolling casters, fitted with rubber floor pads to prevent sliding and protect hard floor surfaces | |
| Waterfall seat edge pressure relief | Rounded downward-curved front seat edge reduces pressure on back of thighs during extended seated use | |
| Contoured mid-back lumbar support | Slightly curved backrest shape provides passive lumbar support for upright seated working posture | |
| Armless design unobstructed movement | No armrests allow users to pull chair fully under desk surfaces and enable flexible seated positions including cross-legged use | |
| Wipe-clean upholstery surface | Smooth non-porous upholstery allows quick cleaning of spills with damp cloth, suitable for daily office/home use | |
| Quick assembly structure | Knockdown design requires attaching base assembly to gas lift column and securing seat unit, no complex tools required | |
| 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 per unit | 1 carton | |
|---|---|---|
| Shipping carton external dimensions (L x W x H) | 650 x 650 x 450 mm | |
| Gross weight per cartoned unit | 12 kg | |
| Packaging volume per unit (CBM) | 0.19 CBM | |
| assembly time per unit (end user) | 20 minutes | |
| 20ft GP container loading quantity | 170 units | |
| 40ft HQ container loading quantity | 410 units | |
| Inner packaging materials | Polythene bag for upholstered parts, EPS foam corner protection, 5-layer corrugated outer carton | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Home office workstations | Compact armless footprint fits small desk spaces, adjustable height matches standard 760 mm home office desks for remote working use | |
|---|---|---|
| Light commercial conference rooms | Neutral beige/white chrome aesthetic coordinates with modern meeting room furniture, stationary base prevents unwanted movement during meetings | |
| Makeup vanities and dressing tables | Armless design and adjustable height work with standard vanity table heights, swivel function allows easy access to mirror and storage | |
| Co-working hot desks | 360-degree swivel and armless design support flexible working postures, wipe-clean upholstery simplifies maintenance in shared high-traffic spaces | |
| Small apartment multi-use spaces | Compact size minimizes floor space usage, neutral color palette matches modern minimalist, scandinavian and cream interior design styles | |
| Reception and waiting areas | Stationary base and streamlined design create a polished modern look for guest seating, height adjustment accommodates users of different heights | |
| 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 | Applicable standards and test results require confirmation | |
|---|---|---|
| EN 1335-2:2018 | Office furniture - Office work chairs - Part 2: Safety requirements, applicable for structural safety, stability and strength verification | |
| EN 1335-3:2009 | Office furniture - Office work chairs - Part 3: Test methods, applicable for validating mechanical performance and durability |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Standard for Office Chairs - General Purpose, applicable for static load, durability, stability and functional performance testing for commercial office seating, including 1136kg base static load requirement | |
|---|---|---|
| Polished chrome base static load capacity | 1136 kg |
Standards applicable to China-market projects
| GB/T 3326-2016 | Furniture - Chairs and stools - Main dimensions, applicable for verifying seat height, depth and clearance dimensional compliance for office seating | |
|---|---|---|
| GB/T 10357.3-2013 | Test of mechanical properties of furniture - Strength and durability of chairs and stools, applicable for static load, impact and durability testing of seat, back and base | |
| GB/T 24821-2009 | Office furniture - Office chairs, applicable for overall safety, structural integrity and functional performance verification for commercial office seating |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Furniture - Chairs and stools - Main dimensions, applicable for verifying seat height, depth and clearance dimensional compliance for office seating; 2. GB/T 10357.3-2013: Test of mechanical properties of furniture - Strength and durability of chairs and stools, applicable for static load, impact and durability testing of seat, back and base; 3. GB/T 24821-2009: Office furniture - Office chairs, applicable for overall safety, structural integrity and functional performance verification for commercial office seating; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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