| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| 3-seat unit overall dimensions | 1830 x 760 x 1030 mm | |
|---|---|---|
| Per-seat center-to-center width | 610 mm | |
| Seat height from finished floor | 460 mm | |
| Seat cushion usable depth (down position) | 470 mm | |
| Seat cushion usable width | 520 mm | |
| Backrest total height from seat surface | 570 mm | |
| Upper black headrest panel height | 220 mm | |
| Armrest height from seat surface | 230 mm | |
| Aisle clearance when seat flipped up | 320 mm | |
| Floor mount foot width | 80 mm | |
| Seat cushion thickness | 120 mm | |
| Backrest padding thickness | 100 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| 3-seat unit net weight | 80 kg | |
|---|---|---|
| Per-seat recommended static load capacity | 150 kg | |
| Seat cushion foam density | 65 kg/m³ | |
| Backrest foam density | 57 kg/m³ | |
| Foam resilience rate | 60% | |
| Upholstery fabric abrasion resistance | 50000 Martindale cycles | |
| Flip-up mechanism cycle durability | 100000 operations | |
| Unit occupancy capacity | 3 adults | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back cushion core | Cold-cured high-resilience polyurethane molded foam | |
|---|---|---|
| Upholstery covering | Woven commercial-grade fabric with fire-retardant treatment | |
| Internal load-bearing frame | 2.0 mm thick welded steel tubing with anti-rust powder coating | |
| Seat flip-up return mechanism | Torsion double-spring steel assembly with automatic gravity return | |
| Armrest surface cap | Black molded polyurethane impact-resistant padding | |
| Armrest support structure | 15 mm thick solid wood composite panel with painted finish | |
| Floor mounting feet | Cast black painted steel with pre-drilled anchor holes | |
| Seat underside modesty panel | 5 mm thick black impact-resistant polypropylene panel | |
| 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 | |
| Tilt Mechanism Plate Thickness | 2.5 mm cold-rolled steel |
Adjustment / rotation / tilt / mobility / storage features
| Seat tip-up action | Spring-loaded automatic return to vertical position when unoccupied | |
|---|---|---|
| Floor mounting system | Rigid fixed bolt-down installation to concrete or riser subfloor | |
| Ganged row connection | Pre-aligned steel bracket linkage between adjacent seats for uniform row alignment | |
| Ergonomic back support | Contoured upright back with dedicated upper headrest panel for extended seated comfort | |
| Noise damping | Built-in rubber buffer pads at seat pivot to eliminate impact noise during tip-up | |
| Aisle access clearance | Vertical flipped seat position creates unobstructed 320 mm clear passage per seat | |
| Modular row extension | Compatible with matching end panels and additional seat units to form custom length rows | |
| 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
| University lecture halls | Fixed ganged layout with high-density seating capacity for large class sizes | |
|---|---|---|
| Corporate auditoriums and report halls | Quiet return mechanism and formal upholstery for professional presentation environments | |
| Small to mid-sized performance theaters | Ergonomic back support for 2+ hour seated events without integrated cup holders | |
| Government and institutional conference venues | Fixed floor mounting provides stable, tamper-resistant seating for public events | |
| School multi-purpose assembly halls | High-abrasion fabric and durable mechanism withstand high student traffic volumes | |
| 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
| Fire performance recommendation | EN 1021:2014, upholstered furniture ignition resistance from smoldering cigarettes | |
|---|---|---|
| Structural durability recommendation | EN 16139:2013, strength and durability for non-domestic seating |
US and Canada office-furniture standards
| Static load recommendation | ANSI/BIFMA X2017Clause 5 static load test for general office/assembly seating | |
|---|---|---|
| Durability cycle recommendation | ANSI/BIFMA X2017Clause 11 seat mechanism cycle durability test |
Standards applicable to China-market projects
| Upholstery fire resistance recommendation | GB 17927.2ignition resistance for upholstered furniture in public assembly spaces | |
|---|---|---|
| Structural strength test recommendation | GB/T 10357.3 mechanical performance test for chair seats and backs | |
| Hardware surface coating recommendation | GB/T 19001quality management system for structural metal components | |
| Formaldehyde emission recommendation | GB 18584formaldehyde emission limits for interior wooden furniture components |
This product must meet the following technical requirements: 1. Upholstery fire resistance recommendation: GB 17927.2ignition resistance for upholstered furniture in public assembly spaces; 2. Structural strength test recommendation: GB/T 10357.3 mechanical performance test for chair seats and backs; 3. Hardware surface coating recommendation: GB/T 19001quality management system for structural metal components; 4. Formaldehyde emission recommendation: GB 18584formaldehyde emission limits for interior wooden furniture components; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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