| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (W x D x H) | 650 x 690 x 1055 mm | |
|---|---|---|
| Seat width | 490 mm | |
| Seat depth | 430 mm | |
| Maximum seat height (floor to seat top) | 515 mm | |
| Minimum seat height (floor to seat top) | 415 mm | |
| Backrest height | 550 mm | |
| Backrest width | 420 mm | |
| Seat cushion thickness | 60 mm | |
| Armrest height above seat | 180 mm | |
| Five-star base diameter | 640 mm | |
| Caster diameter | 55 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 user weight capacity | 125 kg | |
|---|---|---|
| Net weight per chair | 12 kg | |
| Tilt rocking angle | 12 degrees | |
| Gas lift adjustment stroke | 100 mm | |
| Gas lift cycle durability | 100000 cycles | |
| Seat static load capacity | 160 kg | |
| 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
| Backrest upholstery | High-tension polyester breathable mesh | |
|---|---|---|
| Backrest support frame | Glass-fiber reinforced polypropylene | |
| Seat cushion core | 40 kg/m³ high-density molded polyurethane foam | |
| Seat upholstery | Wear-resistant polyester fabric | |
| Armrest construction | Fixed T-shaped polypropylene armrests with flat contact pads | |
| Five-star base | Injection-molded glass-fiber reinforced nylon | |
| Gas lift cylinder | Class 2 black steel gas lift with 50mm outer tube diameter | |
| Tilt mechanism | 2mm thick cold-rolled steel plate with single-position lock | |
| Casters | 55mm diameter hard PA nylon swivel casters | |
| 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
| Seat height adjustment | Pneumatic 100mm stroke adjustment via right-side under-seat lever, locks at any set height | |
|---|---|---|
| 360-degree swivel rotation | Full rotation around central gas lift axis for easy workstation access | |
| Backrest tilt rocking | Synchronized tilt with manual tension adjustment, locks in upright position | |
| Fixed lumbar support | Contoured curved mesh panel at lower back provides consistent support | |
| Smooth rolling mobility | Twin-wheel casters roll on hard floors and low-pile carpet, no locking brake | |
| Fixed armrest support | Rigid armrests provide 180mm of upper arm support at fixed height | |
| Breathable back ventilation | Open mesh back prevents heat buildup during extended sitting | |
| 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
| Open-plan office workstations | Compact 650mm width fits standard partitioned office desks for employee task seating | |
|---|---|---|
| Home office study spaces | Light gray neutral finish matches modern home desks for remote work use | |
| Conference and meeting rooms | Mid-back design provides upright support for short to medium duration meetings | |
| Reception and waiting areas | Breathable mesh and rolling base support flexible, guest-friendly seating arrangements | |
| Call center and shared desk environments | Durable construction and easy-clean fabric suit high-turnover multi-user settings | |
| 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 | Applies to office chair dimensional safety and ergonomic performance | |
|---|---|---|
| EN 1335-2:2018 | Applies to office chair structural strength, stability and durability testing | |
| EN 1335-3:2009 | Applies to office chair test methods for mechanical performance |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applies to general-purpose office chair safety and durability requirements | |
|---|---|---|
| Caster rolling durability | 100000 cycles |
Standards applicable to China-market projects
| GB/T 3326-2016 | Applies to office chair dimensional accuracy and stability testing | |
|---|---|---|
| GB/T 10357.3-2013 | Applies to office chair mechanical strength and durability testing | |
| GB 18584-2001 | Applies to formaldehyde emission limits for wooden/fabric furniture components |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applies to office chair dimensional accuracy and stability testing; 2. GB/T 10357.3-2013: Applies to office chair mechanical strength and durability testing; 3. GB 18584-2001: Applies to formaldehyde emission limits for wooden/fabric furniture components; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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