| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 620 x 660 x 1080 mm | |
|---|---|---|
| Seat width | 500 | |
| Seat depth | 480 | |
| Seat height range | 520 | |
| Backrest height | 580 | |
| Backrest width | 480 | |
| Armrest height above seat | 210 | |
| Armrest pad dimensions | 280 x 60 mm | |
| 5-star base diameter | 700 | |
| Caster wheel diameter | 60 | |
| Knee clearance minimum seat height | 420 | |
| 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
| Suggested static load rating | 150 | |
|---|---|---|
| Suggested dynamic load rating | 120 | |
| Net weight reference | 18 | |
| Foam density (seat cushion) | 45 | |
| Foam thickness (seat cushion) | 80 | |
| Foam density (backrest) | 35 | |
| Foam thickness (backrest) | 60 | |
| Caster rolling durability reference | 100000 | |
| Gas lift cycle reference | 100000 | |
| Suggested warranty period | 2 |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and backrest upholstery | Black bonded leather with smooth finish and horizontal ribbed stitching on back | |
|---|---|---|
| Seat cushion fill | High-density polyurethane foam padded to uniform thickness | |
| Inner seat frame | Plywood or bent wood panel with structural support | |
| Armrest structure | Black padded top pad mounted on chrome-plated steel square support bar | |
| 5-star base | Black nylon reinforced with glass fiber, five-leg radial structure | |
| Gas lift cylinder | Black outer sleeve with internal chrome-plated steel piston rod | |
| Tilt mechanism chassis | Black steel plate chassis with integrated control levers and tension adjustment knob | |
| Caster wheels | Black polyurethane tire with chrome-plated wheel hub and hood | |
| Stitching | Synthetic thread with uniform horizontal rib seams on backrest | |
| Backrest cushion fill | Medium-density polyurethane foam with shaped lumbar contour | |
| Inner seat/back frame | Plywood panel with bent wood forming and structural support ribs | |
| Armrest top pad | Black padded leather-look pad with flat profile, bonded to rigid plastic substrate |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | Pneumatic gas lift operated by right-side lever, providing 120 mm total travel between minimum and maximum seat height | |
|---|---|---|
| 360° swivel function | Full rotation around vertical axis supported by bearing in tilt mechanism and gas lift | |
| Seat tilt with lock | Synchronized or seat-only tilt mechanism with multiple lock positions, operated by front control lever | |
| Tilt tension adjustment | Rotary knob under seat adjusts backrest recline resistance to match user body weight | |
| Mobile base | Five 60 mm dual-wheel casters mounted on 700 mm diameter base for smooth rolling on hard or carpeted floors | |
| Fixed armrest support | Fixed-height armrests with padded tops for forearm support, no height or width adjustment | |
| Lumbar contour support | Contoured backrest with horizontal ribbed panels providing passive lumbar support through shape molding | |
| Gas lift stroke | 120 | |
| Mobile rolling base | Five 60 mm diameter dual-wheel polyurethane casters mounted on 700 mm diameter base for smooth rolling on hard floors and low-pile carpet | |
| Passive lumbar support | Contoured backrest with horizontally ribbed panels providing built-in lumbar support through molded foam shape, no active adjustment mechanism | |
| Breathable ribbed back design | Horizontal ribbed stitching creates segmented upholstery channels for improved air circulation between user back and chair surface | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions |
Verified carton / gross weight / assembly / loading data
| Packing configuration | 1 chair per carton, flat-pack KD (knock-down) with seat-back, base, gas lift, arms and hardware separated | |
|---|---|---|
| Carton dimensions | 820 x 660 x 380 mm | |
| Carton volume reference | 0.205 m³ | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set | |
| Reference Carton Dimensions | 850× 420× 720 mm | |
| Reference Packaged Gross Weight | 23 kg/set | |
| Reference Carton Volume | 0.26 m³/set | |
| Indicative 20GP Loading | 135 sets at 85% space utilization | |
| Indicative 40HQ Loading | 320 sets at 85% space utilization |
Recommended spaces / users / usage modes
| Private executive office | Suitable for manager and director offices where modern leather aesthetic and moderate ergonomic support are required | |
|---|---|---|
| Conference and meeting rooms | Appropriate for conference table seating due to uniform formal appearance and 360° swivel mobility | |
| Reception and visitor areas | Works as premium guest seating in reception zones with professional black leather look | |
| Workstation desks | Suitable for standard 760 mm desk heights with 120 mm height adjustment range covering most user statures | |
| Commercial rental and co-working spaces | Durable upholstery and standard load rating support multi-user co-working and flex-desk environments | |
| Standard workstation desks | Suitable for standard 760 mm desk heights with 120 mm height adjustment range covering 190 cm user statures | |
| Small business home office | Suitable for home office use with 18 kg net weight for easy repositioning, and mid-back design fitting 2.4 m standard ceiling height without visual bulk | |
| Recommended Matching Desk Size | 2.4 m executive desk |
EU Market Access Requirements* EN Standards
| Office chair safety and strength | EN 1335:2009+A1:2013 applies to dimensions, safety requirements and test methods for office work chairs | |
|---|---|---|
| Office chair stability | EN 1335:2018 applies to stability test methods for seating with castors | |
| Upholstered furniture ignition resistance | Recommended references: EN 1021:2014 |
US and Canada office-furniture standards
| General office chairs standard | Recommended references: ANSI/BIFMA X2021 | |
|---|---|---|
| Chair casters standard | ANSI/BIFMA X2019applies to caster durability and floor compatibility performance |
Standards applicable to China-market projects
| General technical requirements for office furniture | Recommended references: GB/T 3326 | |
|---|---|---|
| Upholstered furniture flammability | GB 20286applies to foam and upholstery combustion performance for public space installation | |
| Formaldehyde emission for wood-based panels | GB 18580applies to inner plywood frame formaldehyde release limit |
This product must meet the following technical requirements: 1. General technical requirements for office furniture: Recommended references: GB/T 3326; 2. Upholstered furniture flammability: GB 20286applies to foam and upholstery combustion performance for public space installation; 3. Formaldehyde emission for wood-based panels: GB 18580applies to inner plywood frame formaldehyde release limit; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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