| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 680 x 650 x 860 mm | |
|---|---|---|
| Seat height (adjustment range upper limit) | 480 mm | |
| Seat depth | 480 mm | |
| Seat width | 550 mm | |
| Backrest height above seat | 380 mm | |
| Four-star base leg span | 620 mm | |
| Central gas lift column diameter | 50 mm | |
| Plywood shell panel thickness | 15 mm | |
| Upholstery 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
| Net weight | 19 kg | |
|---|---|---|
| Maximum static user load | 150 kg | |
| Height adjustment travel | 100 mm | |
| Seat foam density | 35 kg/m³ | |
| Foam rebound rate | 45% | |
| Upholstery abrasion resistance | 50000 Martindale cycles | |
| Base static load capacity | 300 kg | |
| Standard warranty period | 3 years | |
| Swivel mechanism cycle life | 30000 rotations | |
| Gas lift cycle life | 100000 actuations |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Top-grain black leather with white contrast edge stitching | |
|---|---|---|
| Structural shell | Steam-bent walnut veneer plywood with walnut finish, fastened with two copper-tone metal accent buttons | |
| Cushion padding | High-resilience polyurethane foam wrapped in polyester dacron | |
| Height adjustment column | Polished chrome-plated cold-rolled steel pneumatic gas lift | |
| Four-star base | 2mm thick polished chrome-plated steel cross frame with black rubber floor glides | |
| Height adjustment lever | Black nylon paddle lever connected to lift mechanism | |
| Shell fasteners | Copper-finish steel button bolts securing upholstered shell to plywood backing | |
| Stitching specification | 8 stitches per inch | |
| Swivel bearing assembly | Zinc-plated steel sealed ball bearing set between gas lift top and seat shell mounting plate | |
| Upholstery substrate | 4mm thick hardboard backing panel secured to plywood shell to support cushion layers | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame |
Adjustment / rotation / tilt / mobility / storage features
| 360-degree swivel rotation | Full rotation enabled by sealed bearing between gas lift and seat shell | |
|---|---|---|
| Pneumatic seat height adjustment | 100mm vertical travel controlled by side paddle lever, locks at any height within travel range | |
| Fixed tilt position | Upright relaxed lounge angle of 105 degrees between seat and back, no tilt recline mechanism | |
| Floor protection | Black non-marking rubber glides on each base leg to prevent hard floor scratching | |
| Integrated armrest design | Curved upholstered shell forms continuous armrests integrated with back and seat for ergonomic forearm support | |
| Low-profile base design | Four-star chrome base sits flush to floor for stable stationary placement, no rolling casters fitted | |
| Fixed lounge tilt position | 105 degree fixed included angle between seat and back, no recline or tilt tension mechanism fitted | |
| Integrated armrest support | Curved upholstered shell forms continuous 70mm wide armrests integrated with back and seat, supporting forearms at relaxed 90 degree elbow angle | |
| Low-profile stable base | Four-star chrome base sits flush to floor with 10mm ground clearance, no rolling casters fitted for stationary placement | |
| Height release operation | Paddle lever actuates gas lift valve with 5mm downward travel, accessible from seated position on either side of the chair | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg |
Verified carton / gross weight / assembly / loading data
| Number of shipping cartons | 1 | |
|---|---|---|
| Shipping carton dimensions | 720 x 680 x 520 mm | |
| Gross shipping weight | 23 kg | |
| Shipping volume per unit | 0.255 CBM | |
| Assembly time per unit | 15 minutes | |
| 20ft GP container loading quantity | 110 units | |
| 40ft HQ container loading quantity | 270 units | |
| Packaging materials | 5-layer corrugated carton, EPS foam corner protection, plastic dust bag for upholstery | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Executive office lounge areas | Suitable for waiting zones and informal meeting spaces in corporate offices, matching mid-century modern interior design schemes | |
|---|---|---|
| Home office and study spaces | Fits residential workspaces as a stylish alternative to standard task chairs, appropriate for short to medium duration seated work | |
| Hotel lobby and guest room seating | Appropriate for boutique hotels and upscale hospitality venues, providing durable guest seating with premium visual appeal | |
| Co-working and creative studio spaces | Suits flexible work environments as accent seating at touchdown work points or lounge collaboration zones | |
| Reception and waiting areas | Ideal for high-visibility customer-facing spaces, combining compact footprint with refined visual design for front-of-house use | |
| Residential living room accent seating | Fits modern residential living spaces as a statement side chair, suitable for reading and casual relaxation adjacent to sofas or side tables | |
| 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 16139:2013 | Strength, durability and stability requirements for non-domestic seating, applicable for commercial lounge area use | |
|---|---|---|
| EN 1022:2018 | Applicable standards and test results require confirmation | |
| EN 13356:2019 | Requirements for upholstered furniture leather, for abrasion resistance and colorfastness to rubbing |
US and Canada office-furniture standards
| North America procurement and testing reference | ANSI/BIFMA X5.4 Public and Lounge Seating |
|---|
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to the bent plywood shell components for dimensional stability and finish durability | |
|---|---|---|
| GB/T 16799-2008 | Requirements for leather used in furniture, applicable to the black upholstery leather for tear strength and colorfastness | |
| GB 28007-2011 | Strength and stability requirements for children's and adult seating, applicable for static load and tip-over testing | |
| GB/T 10357.3-2013 | Test method for furniture mechanical properties of chairs and stools, applicable for seat and back durability testing |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to the bent plywood shell components for dimensional stability and finish durability; 2. GB/T 16799-2008: Requirements for leather used in furniture, applicable to the black upholstery leather for tear strength and colorfastness; 3. GB 28007-2011: Strength and stability requirements for children's and adult seating, applicable for static load and tip-over testing; 4. GB/T 10357.3-2013: Test method for furniture mechanical properties of chairs and stools, applicable for seat and back durability testing; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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