| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall two-seat module dimensions | 1160 x 850 x 900 mm | |
|---|---|---|
| Seat center-to-center distance per position | 580 mm | |
| Seat surface height above finished floor | 460 mm | |
| Writing desk surface height above finished floor | 760 mm | |
| Armrest height above seat surface | 200 mm | |
| Backrest total height above seat surface | 440 mm | |
| Seat panel usable depth | 400 mm | |
| Writing desk surface depth | 300 mm | |
| Floor anchor foot plate dimensions | 300 x 40 mm | |
| Recommended tier row-to-row spacing for sightlines | 950 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-seat static load capacity | 260 kg | |
|---|---|---|
| Whole two-seat module net weight | 42 kg | |
| Formaldehyde emission limit for panels | 0.025 mg/m³ | |
| Recommended maximum user weight per seat | 120 kg | |
| Frame static load test rating | 1500 N per support leg | |
| Surface scratch resistance rating for panels | 2000 cycles | |
| Product structural warranty period | 5 years | |
| 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 |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and backrest panels | 17mm thick high-density multilayer plywood with beige melamine fireproof laminate | |
|---|---|---|
| Writing desk panel | 25mm thick particleboard core with matte melamine writing surface, PVC edge banding | |
| Support frame and legs | 4mm thick die-cast aluminum alloy with 1.6mm cold-rolled steel formed brackets, dark gray electrostatic powder coating | |
| Armrests | Integral molded nylon/steel composite with matte dark finish, rounded impact-resistant edges | |
| Floor anchor fasteners | M10 x 80mm hex socket expansion bolts, zinc-plated steel | |
| Modesty panel below desk | 13mm thick melamine-laminated fiberboard matching seat finish | |
| Frame surface treatment | Acid pickling, phosphating, then electrostatic polyester powder coating | |
| 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 | |
| Five-star Base Material Thickness | Metal base wall 3.5 mm; diameter 700 mm |
Adjustment / rotation / tilt / mobility / storage features
| Permanent floor-mounted installation | Anchored directly to tiered concrete floors via four expansion bolts per support leg, no movement after installation | |
|---|---|---|
| Integrated continuous writing surface | Shared fixed desk spans full width of two adjacent seats, no moving or folding tablet components | |
| Fixed bench-style seat | Non-tip-up solid seat panel with no return mechanism, zero operational noise during use | |
| Integrated armrest support per seat | Each seating position includes dual curved armrests that double as side structural supports | |
| Modular row connection | Two-seat bays connect end-to-end to form continuous long rows for auditorium or classroom installation | |
| Sightline-optimized tier geometry | Designed for 120mm vertical tier rise between rows to maintain unobstructed view to presentation area | |
| Low-maintenance surface design | Smooth melamine surfaces resist stains and can be wiped clean with standard disinfectants | |
| 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 tiered lecture halls | Fixed modular rows provide standardized seating with writing surfaces for large-class instruction | |
|---|---|---|
| Corporate training and report auditoriums | Durable construction supports frequent daily use for conferences and staff training | |
| Multimedia classrooms in middle schools and colleges | Sightline-optimized tiered design ensures clear view of projection screens and instructors | |
| Government and institutional meeting rooms | Formal fixed layout supports structured presentations and official events | |
| High-traffic public educational spaces | Low-maintenance surfaces and heavy-duty frame resist wear from repeated daily use | |
| Seated examination halls | Fixed individual positions with dedicated writing surfaces prevent cheating and support exam 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 13761:2002 | Performance requirements for educational seating, applicable to seat strength and stability | |
|---|---|---|
| EN 12521:2015 | Strength, durability and safety requirements for non-domestic seating, applicable to public use |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to panel components and finish quality | |
|---|---|---|
| GB/T 24821-2009 | General technical requirements for classroom desks and chairs, applicable to seat and desk height dimensions | |
| GB 18584-2001 | Limit of formaldehyde emission for interior decoration materials, applicable to wood-based panel components |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to panel components and finish quality; 2. GB/T 24821-2009: General technical requirements for classroom desks and chairs, applicable to seat and desk height dimensions; 3. GB 18584-2001: Limit of formaldehyde emission for interior decoration materials, applicable to wood-based panel components; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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