| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall unit dimensions (writing tablet open) | 590 x 880 x 970 mm | |
|---|---|---|
| Center-to-center row spacing width | 590 mm | |
| Seat height from floor to cushion top | 460 mm | |
| Seat cushion usable width | 510 mm | |
| Seat cushion usable depth | 460 mm | |
| Backrest total height from floor | 970 mm | |
| Armrest height from floor to wood cap | 600 mm | |
| Folded unit depth (tablet/seat stowed) | 560 mm | |
| Open writing tablet height from floor | 760 mm | |
| Writing tablet usable surface | 340 x 255 mm | |
| Wood arm cap thickness | 30 mm | |
| Floor base foot print width (front to back) | 680 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
| Per-unit net weight | 40 kg | |
|---|---|---|
| Recommended static user load capacity | 150 kg | |
| Seat tip-up return durability cycles | 100000 cycles | |
| Seat return operation noise level | 8 dB | |
| Fabric abrasion resistance (Martindale) | 50000 cycles | |
| Seat cushion foam density | 60 kg/m³ | |
| Backrest foam density | 45 kg/m³ | |
| Upholstery seam stitch pitch | 8 stitches per 30mm | |
| Manufacturer warranty period | 5 years | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery fabric | Wear-resistant flame-retardant treated brown woven acrylic | |
|---|---|---|
| Seat cushion core | 60 kg/m³ cold-molded high-resilience polyurethane foam | |
| Backrest cushion core | 45 kg/m³ cold-molded polyurethane foam | |
| Armrest top caps | 30mm thick solid beech wood with multi-coat clear lacquer finish | |
| Folding writing tablet | 15mm thick painted plywood writing surface with steel support hinge | |
| Support frame and legs | 2.5mm thick cold-rolled steel tube with matte black powder coating | |
| Inner seat support panel | 10mm thick plywood base under cushion | |
| Outer side panels | 15mm thick high-density fiberboard upholstered with matching fabric | |
| Seat return mechanism | Torsion spring with hydraulic damper for quiet tip-up action | |
| Floor mounting base plates | 2.5mm thick steel plates with pre-drilled anchor holes | |
| Cross-brace footrest | 2.0mm thick powder-coated steel tube connecting front and rear legs | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Writing tablet operation | Right-arm mounted fold-out tablet that rotates 90 degrees to stow flush when not in use | |
|---|---|---|
| Seat tip-up mechanism | Spring-loaded damped seat that automatically lifts to vertical position when unoccupied | |
| Floor anchoring | Permanent fixed installation to tiered or flat concrete floors via 4 expansion bolts per unit | |
| Seat return damping | Hydraulic damper controls seat lift speed to eliminate slamming noise during return | |
| Row ganging compatibility | Designed for continuous row installation with shared side panels between adjacent units | |
| Foot support | Integrated steel crossbar footrest positioned at 250mm above floor for relaxed leg positioning | |
| Writing tablet load support | Hinged steel support bracket holds tablet level to support writing materials and lightweight devices | |
| Upholstery maintenance | Stain-resistant fabric finish allows spot cleaning for high-traffic public venue use | |
| 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
| 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
| Lecture hall and tiered classroom seating | Fixed installation with writing tablet supports note-taking and exam use in academic spaces | |
|---|---|---|
| Conference and auditorium assembly spaces | Quiet return mechanism and contoured back suit long formal events and presentations | |
| Government and corporate meeting halls | Formal wood trim and durable upholstery present a professional appearance for official functions | |
| Training center and multi-purpose room seating | Space-saving tip-up seat and foldable tablet enable flexible room layout changes | |
| Theater and performing arts venue auxiliary seating | Durable fixed construction withstands high daily traffic in public performance spaces | |
| 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 12727:2000 | Furniture – Seating for auditorium and public areas, strength and durability test standard | |
|---|---|---|
| EN 1021-1:2014 | Upholstered furniture flammability, cigarette ignition resistance for fabric and foam | |
| EN 13722:2004 | Furniture – Test methods for chair stability, applicable to fixed floor-mounted seating |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | General purpose office chairs, referenced for static load and durability benchmarks | |
|---|---|---|
| ANSI/BIFMA X6.1-2018 | Educational seating, applicable for writing tablet strength and durability requirements |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to wood arm and panel components | |
|---|---|---|
| GB/T 35607-2017 | Public furniture seating for assembly venues, applicable to structural safety and performance | |
| GB 20286-2006 | Flame retardant requirements for furniture in public places, applicable to fabric and foam | |
| GB/T 17657-2013 | Test methods for surface properties of wood-based panels, applicable to table and panel finishes |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to wood arm and panel components; 2. GB/T 35607-2017: Public furniture seating for assembly venues, applicable to structural safety and performance; 3. GB 20286-2006: Flame retardant requirements for furniture in public places, applicable to fabric and foam; 4. GB/T 17657-2013: Test methods for surface properties of wood-based panels, applicable to table and panel finishes; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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