| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 550 x 608 x 837 mm | |
|---|---|---|
| Seat height from floor | 460 mm | |
| Seat depth | 475 mm | |
| Seat usable width | 465 mm | |
| Backrest height above seat | 355 mm | |
| Backrest width | 438 mm | |
| Writing tablet dimensions | 360 x 250 mm | |
| Writing tablet clearance above floor | 678 mm | |
| Front leg spread width | 490 mm | |
| Armrest height above seat | 230 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 per unit | 9 kg | |
|---|---|---|
| Recommended static user load | 120 kg | |
| Writing tablet static load capacity | 15 kg | |
| Seat foam density | 60 kg/m³ | |
| Stackable storage height per unit | 120 mm | |
| Frame tubing wall thickness | 1.5 mm | |
| Standard product warranty | 5 years | |
| Seam stitch pitch | 8 mm | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Backrest shell | Injection-molded black PP plastic with ribbed ergonomic split contoured shape | |
|---|---|---|
| Seat support core | 15 mm thick plywood inner panel | |
| Seat cushion padding | High-density shaped polyurethane foam with molded edge support | |
| Seat upholstery | Wear-resistant black polyester fabric with breathable weave | |
| Frame structure | Powder-coated matte black steel four-leg folding frame with articulating hinge joints | |
| Armrests | Injection-molded black PP fixed-height armrests mounted directly to frame | |
| Writing tablet | Rigid black ABS plastic panel with metal mounting bracket | |
| Frame hinge hardware | Zinc-plated steel pivot bolts with chrome-finished end caps | |
| Surface treatment | Electrostatic powder coating on steel frame for scratch and rust resistance | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Gas-lift Engineering Specification | Recommended Class 4; outer tube 50 mm; stroke 100 mm |
Adjustment / rotation / tilt / mobility / storage features
| Frame folding mechanism | Dual-side pivot hinge design enables flat folding for compact stack storage | |
|---|---|---|
| Writing tablet operation | Side-mounted tablet rotates vertically to fold flush against frame when not in use | |
| Seat position | Fixed-position padded seat aligned for upright training posture | |
| Backrest support | Ergonomic split ribbed molding provides flexible lumbar support without tilt adjustment | |
| Stacking capability | Nested folded profile allows vertical stacking of up to 10 chairs on flat storage surfaces | |
| Armrest function | Fixed-height hard armrests provide forearm support during seated writing tasks | |
| Optional caster compatibility | Leg ends accept 50 mm diameter snap-in casters for mobile training room configurations | |
| Floor protection | Injection-molded plastic foot caps prevent floor scratching during movement | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg | |
| Height Adjustment Stroke | 100 mm continuous travel | |
| Rotation / Mobility Configuration | 360° swivel with 5-caster multidirectional movement |
Verified carton / gross weight / assembly / loading data
| Package volume per carton | 0.394 CBM | |
|---|---|---|
| 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
| Corporate training rooms | Folding stackable design enables fast room reconfiguration for multi-size training sessions | |
|---|---|---|
| Conference and meeting spaces | Integrated writing tablet supports note-taking and laptop use for all-day meetings | |
| Educational institution classrooms | Fixed ergonomic support and durable construction suit high-frequency student use | |
| Lecture hall and event seating | Compact nesting storage allows efficient bulk storage between large events | |
| Temporary office and co-working spaces | Fast deployment and no-power assembly supports flexible hot-desking setups | |
| Community and government assembly rooms | Commercial-grade frame and surface materials withstand high public traffic use | |
| 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 1335-1:2000 | Office work chairs safety and dimensional requirements, applicable for functional dimension verification | |
|---|---|---|
| EN 13761:2002 | Office visitor chairs performance requirements, applicable for folding training chair structural durability testing | |
| EN 1022:2005 | Domestic and contract seating stability test method, applicable for anti-tip performance verification |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | General purpose office chairs safety and performance standard, applicable for commercial training seating load testing | |
|---|---|---|
| ANSI/BIFMA X5.4-2020 | Lounge and public seating standard, applicable for high-frequency conference/training room durability requirements |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture components, applicable for internal plywood seat core inspection | |
|---|---|---|
| GB 18584-2001 | Indoor decoration material limit of harmful substances for wooden furniture, applicable for formaldehyde emission testing of seat core | |
| GB/T 10357.3-2013 | Furniture mechanical performance test for chairs and stools, applicable for seat and back static/durability load testing |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture components, applicable for internal plywood seat core inspection; 2. GB 18584-2001: Indoor decoration material limit of harmful substances for wooden furniture, applicable for formaldehyde emission testing of seat core; 3. GB/T 10357.3-2013: Furniture mechanical performance test for chairs and stools, applicable for seat and back static/durability load testing; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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