| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 730 x 826 x 1280 mm | |
|---|---|---|
| Seat width | 620 mm | |
| Seat depth | 550 mm | |
| Seat height adjustment range | 550 mm (max published value 550 mm) | |
| Backrest height | 780 mm | |
| Five-star base diameter | 700 mm | |
| Caster diameter | 50 mm | |
| Armrest height above seat | 230 mm | |
| Backrest width | 580 mm | |
| Seat cushion thickness | 120 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 | 30 kg | |
|---|---|---|
| Recommended user weight capacity | 150 kg | |
| Seat foam density | 40 kg/m³ | |
| Foam rebound rate | 55% | |
| Leather thickness | 1.0 mm | |
| Caster static load rating per wheel | 40 kg | |
| Upholstery seam stitch pitch | 8 mm | |
| Gas lift class rating | Class 3 | |
| 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 | Dark brown top-grain leather with contrast stitching | |
|---|---|---|
| Seat and back padding | High-density high-resilience polyurethane foam | |
| Armrests and side panels | Polished mahogany-toned solid wood with lacquer finish | |
| Five-star base | Solid mahogany-finished wood with central chrome-plated metal connector | |
| Internal support frame | 18mm thick bent plywood and solid wood framing | |
| Gas lift cylinder | Chrome-plated cold-rolled steel, SGS/BIFMA tested | |
| Tilt mechanism chassis | 3mm thick stamped steel with multi-position lock | |
| Caster wheels | 50mm diameter PU-covered hooded casters with metal axles | |
| Recline tension knob | Inset leather-wrapped plastic adjustment knob mounted on left side panel | |
| 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 swivel bearing | |
|---|---|---|
| Pneumatic seat height adjustment | 100mm vertical travel via under-seat adjustment lever | |
| Recline tilt function | 135-degree maximum backward tilt with 4-position locking | |
| Tilt tension adjustment | Resistance adjustable via left-side side-panel knob to match user weight | |
| Smooth rolling mobility | Dual-wheel casters suitable for hard floors and low-pile carpet | |
| Integrated lumbar support | Vertical quilted padded lumbar section built into backrest | |
| Fixed arm support | Curved solid wood armrests positioned at fixed ergonomic height | |
| 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 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 office use | Suitable for CEO/manager private offices with formal traditional aesthetic | |
|---|---|---|
| Conference room head seating | Appropriate for boardroom head-of-table positions requiring formal appearance | |
| Long-duration desk work | Ergonomic padding and adjustments support 8+ hours of seated work | |
| Traditional office interiors | Complements mahogany/wood veneer desk sets and classic office decor | |
| Commercial office procurement | Meets standard contract furniture specifications for bulk purchasing | |
| Hard floor environments | PU casters prevent scratching on wood, tile, or laminate flooring | |
| 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 structural strength and durability | |
| EN 1335-3:2020 | Applicable European standard for office chair test methods |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applicable North American standard for general-purpose office chairs safety and performance | |
|---|---|---|
| BIFMA G1-2020 | Applicable ergonomic guideline for office furniture seating design |
Standards applicable to China-market projects
| GB/T 3324-2017 | Applicable standard for wooden furniture general technical requirements | |
|---|---|---|
| GB 18584-2001 | Applicable standard for indoor furniture formaldehyde emission limits |
This product must meet the following technical requirements: 1. GB/T 3324-2017: Applicable standard for wooden furniture general technical requirements; 2. GB 18584-2001: Applicable standard for indoor furniture formaldehyde emission limits; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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