| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall 2-seat row unit dimensions | 1160 x 850 x 1030 mm | |
|---|---|---|
| Per-seat center distance | 580 mm | |
| Finished seat height above floor | 460 mm | |
| Fixed writing tablet height above floor | 760 mm | |
| Fixed writing tablet dimensions | 580 x 300 x 25 mm | |
| Lower secondary storage shelf dimensions | 500 x 240 x 15 mm | |
| Mesh modesty panel height | 700 mm | |
| Floor fixing plate dimensions | 180 x 80 x 5 mm | |
| Seat cushion usable dimensions | 480 x 420 x 100 mm | |
| Backrest usable dimensions | 480 x 460 x 40 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
| Seat cushion foam density | 45 kg/m³ | |
|---|---|---|
| Seat cushion foam thickness | 100 mm | |
| Recommended static load per seat | 150 kg | |
| Metal frame salt spray resistance | 24 h | |
| Wood-based panel formaldehyde emission | E1 grade | |
| Writing surface scratch resistance | 2000 cycles | |
| Net weight per 2-seat unit | 110 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 |
Core acceptance fields · Panels / hardware / frame / upholstery
| Cantilever support frame | 2.0mm cold-rolled steel with matte black polyester epoxy powder coating | |
|---|---|---|
| Floor mounting brackets | 5.0mm welded steel plate with anti-rust phosphating pre-treatment | |
| Fixed writing tablet | 25mm high-density particle board with beech wood-tone fire-resistant laminate and PVC edge banding | |
| Seat cushion core | High-resilience polyurethane foam, density 45kg/m³ | |
| Seat upholstery | Wear-resistant polyester fabric, 300g/m² weight, 50000-cycle abrasion resistance | |
| Inter-row modesty panels | Tensioned black polyester mesh over steel perimeter frame | |
| Secondary under-tablet shelf | 15mm MDF with matching wood-tone laminate and PVC edging | |
| Fastening hardware | M10 x 80mm galvanized steel expansion bolts with plastic cover caps | |
| 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
| Floor-mounted cantilever support | Permanently fixed to tiered lecture hall floors via bolted base plates, no free movement | |
|---|---|---|
| Fixed integrated writing surface | Rigidly attached non-folding tablet positioned at ergonomic writing height for each seat | |
| Under-tablet storage shelf | Fixed lower shelf positioned below writing tablet for personal item storage during use | |
| Mesh privacy divider | Vertical semi-opaque mesh panel between adjacent rows provides leg privacy without blocking ventilation | |
| Damped seat return mechanism | Spring-loaded damped hinge automatically returns tip-up seat to vertical position when unoccupied | |
| Anti-pinch seat hinge | 90° rotation range with rubber damping pads prevents finger injury during seat return | |
| Row modular expansion | Multiple 2-seat units connect end-to-end to form continuous stepped rows of custom length | |
| 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
| Tiered lecture hall installation | Permanent floor-mounted design suits stepped university/college lecture theaters with fixed row layouts | |
|---|---|---|
| Corporate training room use | Durable high-traffic construction suits repeated daily use in staff training and conference facilities | |
| Secondary school auditorium use | Standard ergonomic sizing fits teenage and adult learners in school assembly and teaching spaces | |
| Examination hall configuration | Fixed tablet and anti-tamper fixed installation supports secure high-stakes exam room deployments | |
| Multi-function conference hall use | Modular row construction suits flexible permanent seating in multi-purpose public event venues | |
| 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 1729-1:2015 | Furniture for educational institutions, safety requirements for seating and tables | |
|---|---|---|
| EN 1729-2:2015 | Furniture for educational institutions, performance requirements for fixed classroom seating | |
| EN 1022:2018 | Domestic and non-domestic seating, stability test methods for fixed mounted units |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to wood-based tablet and shelf components | |
|---|---|---|
| GB/T 3325-2017 | General technical requirements for metal furniture, applicable to steel frame and hardware components | |
| GB/T 3976-2014 | Functional sizes and technical requirements for school desks and chairs, applicable to seat and table height dimensions | |
| GB 18580-2017 | Formaldehyde emission limits for wood-based panels, applicable to MDF and particle board components | |
| GB 28007-2011 | Safety requirements for children's and school furniture, applicable to structural stability and edge finishing |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to wood-based tablet and shelf components; 2. GB/T 3325-2017: General technical requirements for metal furniture, applicable to steel frame and hardware components; 3. GB/T 3976-2014: Functional sizes and technical requirements for school desks and chairs, applicable to seat and table height dimensions; 4. GB 18580-2017: Formaldehyde emission limits for wood-based panels, applicable to MDF and particle board components; 5. GB 28007-2011: Safety requirements for children's and school furniture, applicable to structural stability and edge finishing; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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