| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 740 x 800 x 1250 mm | |
|---|---|---|
| Seat width | 540 mm | |
| Seat depth | 550 mm | |
| Adjustable seat height from floor | 520 mm | |
| Backrest height | 730 mm | |
| Armrest height from seat | 220 mm | |
| Four-prong base span | 660 mm | |
| Caster wheel diameter | 50 mm | |
| Seat cushion thickness | 120 mm | |
| Backrest cushion thickness | 80 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
| Recommended static weight capacity | 151 kg | |
|---|---|---|
| Gas lift height adjustment stroke | 100 mm | |
| Net weight range | 36 kg | |
| Backrest recline angle | 20 degrees | |
| Base static load rating | 453 kg | |
| Caster rolling durability | 98000 cycles | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ | |
| Upholstery Thickness / Abrasion Reference | 1.4 mm / 50000 cycles | |
| Five-star Base Static Load Reference | Acceptance target ≥120 kg; chair reference load 150 kg |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Black top-grain leather or high-grade PU faux leather | |
|---|---|---|
| Seat and back padding | 40kg/m³ high-density polyurethane foam | |
| Side and arm outer trim | Walnut-stained bent plywood | |
| Armrest padding | 20mm thick foam pad wrapped in matching black upholstery | |
| Internal seat/back frame | 18mm thick multi-layer plywood | |
| Central mechanism support | 2.5mm thick stamped steel | |
| Four-prong base | Solid walnut-stained wood with steel central stem insert | |
| Caster wheels | Black nylon dual-wheel casters | |
| Gas lift cylinder | Class 3 steel pneumatic cylinder | |
| Tufting hardware | Metal button tufts with matching black finish | |
| Seam stitch pitch | 8 stitches per inch | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Pneumatic seat height adjustment | 360-degree rotating lever under seat adjusts seat height between 440mm and 520mm from floor via 100mm stroke gas lift | |
|---|---|---|
| 360-degree swivel rotation | Full rotation around central gas lift stem for easy access to desk surfaces without repositioning the base | |
| Tilt tension adjustment | Rotating knob under seat adjusts spring tension to match user weight for controlled rocking motion | |
| Tilt lock function | Locking lever secures backrest in upright working position, or unlocks for 20-degree backward recline | |
| Smooth rolling mobility | Dual-wheel nylon casters on four base prongs allow low-effort movement across hard floors and low-pile carpet without floor damage | |
| Ergonomic support zones | Integrated headrest supports neck, mid-back tufted padding supports lumbar region, curved padded armrests support elbows at typing height | |
| Fixed integrated armrests | Curved padded armrests with bent wood trim are permanently fixed at ergonomic elbow height, no height or width adjustment | |
| 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 packages | 1 | |
|---|---|---|
| Export carton dimensions | 860 x 710 x 510 mm | |
| Gross shipping weight per carton | 36 kg | |
| Packaging volume (CBM) | 0.31 | |
| Required assembly time | 30 minutes | |
| 20GP container loading quantity | 145 units | |
| 40HQ container loading quantity | 355 units | |
| Warranty period | 3 years | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Executive private office | Traditional formal aesthetic with tufted black leather and walnut trim matches professional executive office decor, suitable for 8 hour daily seated work for senior staff | |
|---|---|---|
| Home office study | Mid-century inspired bentwood accents and high-back support suit premium home office spaces, paired with 760 mm height executive desks | |
| Boardroom meeting rooms | Formal appearance is suitable for fixed boardroom seating around conference tables, supporting upright seated posture during meetings | |
| Executive reception areas | Polished wood and leather finish creates a professional first impression in visitor reception or waiting areas for senior leadership | |
| Hotel business centers | Durable construction and premium appearance suit hotel business center workstations for guest use, with rolling mobility for flexible workstation arrangement | |
| Recommended complementary furniture | Pair with matching walnut veneer executive desk, leather guest seating, and wood lateral file cabinets for coordinated suite installations | |
| 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 | Applies to office work chairs safety requirements; recommended for structural stability, strength, and durability testing for commercial use | |
| EN 1022:2018 | Applies to furniture – seating determination of stability; recommended for verifying the chair does not tip during normal use and recline |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applies to general-purpose office chairs; recommended as baseline for testing load capacity, cyclic durability, mechanism performance, and caster durability for commercial installation | |
|---|---|---|
| Seat height adjustment cycles | 100000 |
Standards applicable to China-market projects
| GB/T 3326-2016 | Applies to dimensional and stability requirements for office seating, recommended for acceptance inspection of overall size, seat height, and stability | |
|---|---|---|
| GB/T 24821-2009 | Applies to office chair mechanical performance requirements, recommended for testing seat, backrest, and armrest static and fatigue loads | |
| GB 18584-2001 | Applies to indoor decorating and refurbishing materials – limit of harmful substances in wood furniture, recommended for formaldehyde emission testing of wood trim components | |
| GB/T 16434-1996 | Applies to furniture hardware – swivel chair pedestals, recommended for testing base strength and caster attachment durability |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applies to dimensional and stability requirements for office seating, recommended for acceptance inspection of overall size, seat height, and stability; 2. GB/T 24821-2009: Applies to office chair mechanical performance requirements, recommended for testing seat, backrest, and armrest static and fatigue loads; 3. GB 18584-2001: Applies to indoor decorating and refurbishing materials – limit of harmful substances in wood furniture, recommended for formaldehyde emission testing of wood trim components; 4. GB/T 16434-1996: Applies to furniture hardware – swivel chair pedestals, recommended for testing base strength and caster attachment durability; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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