| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 645 x 700 x 1250 mm | |
|---|---|---|
| Seat width | 520 mm | |
| Seat depth | 490 mm | |
| Maximum seat height (gas lift extended) | 540 mm | |
| Minimum seat height (gas lift lowered) | 450 mm | |
| Backrest height | 670 mm | |
| Backrest width | 520 mm | |
| Maximum armrest height (seat raised) | 730 mm | |
| Five-star base diameter | 700 mm | |
| Caster diameter | 60 mm | |
| Cushion thickness | 120 mm | |
| Backrest padding thickness | 80 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| Net weight | 25 kg | |
|---|---|---|
| Maximum user weight capacity | 159 kg | |
| Tilt mechanism cycle durability | 300000 cycles | |
| Gas lift static load rating | 250 kg | |
| Caster rolling durability | 100000 cycles | |
| Foam density (seat and back) | 40D | |
| Foam rebound rate | 60% | |
| Leather upholstery abrasion resistance | 50000 cycles | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Top-grain brown finished leather | |
|---|---|---|
| Internal seat support panel | 20 mm thick plywood | |
| Internal back frame | Solid hardwood frame | |
| Armrest construction | Polished solid wood frame with padded leather top | |
| Five-star base construction | Polished solid wood with metal center hub | |
| Caster material | Black PU outer tread with hard nylon inner hub | |
| Gas lift material | Chrome-plated steel Class 4 pneumatic cylinder | |
| Tilt mechanism material | 3 mm thick stamped steel with black powder coat | |
| Cushion padding | Layered high-density polyurethane foam with soft top layer | |
| Backrest padding | High-density polyurethane foam with contoured lumbar support | |
| Stitching detail | 8 mm seam pitch for reinforced leather seams | |
| Side mechanism cover | Leather-wrapped panel with solid wood edge trim |
Adjustment / rotation / tilt / mobility / storage features
| Gas lift height adjustment | 90 mm vertical travel between minimum and maximum seat height | |
|---|---|---|
| Tilt recline function | 18 degree maximum backward recline from upright locked position | |
| Tilt tension adjustment | Side-mounted rotary dial to adjust recline resistance for user weight | |
| Tilt lock function | Locking lever secures chair in upright or selected recline positions | |
| Caster mobility | Smooth rolling on carpet and hard floor surfaces with brake-free casters | |
| Fixed padded armrests | Stationary armrests with leather padding for forearm support at desk height | |
| Integrated head support | Padded top section of high backrest provides built-in head and neck support | |
| 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
| Packaging components note | KD assembly of base, casters, mechanism, and seat-back unit with hardware | |
|---|---|---|
| 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
| Executive private office | High-back wood-trim leather design fits traditional management office aesthetics | |
|---|---|---|
| Conference room seating | Comfortable padded support for long multi-hour meetings | |
| Traditional style office suites | Polished wood trim complements solid wood desk and cabinet collections | |
| User profile | Suitable for adult users between 190 cm height for desk-based tasks | |
| 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 European standard for office chair dimensions and safety requirements | |
|---|---|---|
| EN 1335-2:2018 | Applicable European standard for office chair strength, durability, and stability testing | |
| EN 1021-1:2014 | Applicable European standard for upholstered furniture resistance to cigarette ignition |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 Clause 7 | Applicable requirement for 300,000-cycle tilt mechanism durability testing | |
|---|---|---|
| Five-star wood base static load rating | 1136 kg |
Standards applicable to China-market projects
| GB/T 16799-2008 | Applicable standard for leather upholstery material performance and defect grading | |
|---|---|---|
| GB 28007-2011 | Applicable standard for formaldehyde and harmful substance limits in upholstered furniture |
This product must meet the following technical requirements: 1. GB/T 16799-2008: Applicable standard for leather upholstery material performance and defect grading; 2. GB 28007-2011: Applicable standard for formaldehyde and harmful substance limits in upholstered furniture; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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