| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| 3-seat ganged unit overall dimension | 1770 x 820 x 1030 mm | |
|---|---|---|
| Single seat center-to-center distance | 590 mm | |
| Seat height from finished floor | 460 mm | |
| Seat usable inner width | 520 mm | |
| Seat usable depth | 500 mm | |
| Armrest top height from floor | 660 mm | |
| Retracted seat unit depth (seats tipped up) | 430 mm | |
| Fully extended writing tablet usable size | 350 x 260 x 12 mm | |
| Writing tablet height above floor when deployed | 750 mm | |
| Minimum required row-to-row spacing for installation | 1070 mm | |
| Solid wood armrest pad dimension | 370 x 80 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
| 3-seat ganged unit net weight | 78 kg | |
|---|---|---|
| Maximum recommended static load per seat | 160 kg | |
| Maximum vertical static load per armrest | 250 kg | |
| Seat cushion polyurethane foam density | 60 kg/m³ | |
| Backrest polyurethane foam density | 60 kg/m³ | |
| Seat foam rebound rate | 60% | |
| Tip-up seat mechanism fatigue cycle rating | 100000 cycles | |
| Metal frame anti-corrosion service life | 5 years | |
| Recommended service life under proper public venue maintenance | 8 years | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and backrest upholstery | Dark flame-retardant fabric/PU leather, abrasion rating Level 4 | |
|---|---|---|
| Seat and backrest padding | 140mm thick cold-cured high-resilience polyurethane foam on seats, 135mm thick on backs | |
| Seat and back internal support panel | 15mm thick multi-layer plywood, shaped for ergonomic contour | |
| Armrest top surface | Finished solid oak/wood veneer with multi-layer clear paint finish | |
| Armrest side panel | Upholstery-matched dark hard plastic/padded panel | |
| Support frame and floor legs | 1.5mm thick cold-rolled steel, pickling phosphating + electrostatic powder coating | |
| Retractable writing tablet bracket | Die-cast aluminum alloy, silent rotating pivot, anti-panic release | |
| Writing tablet surface | 12mm thick multi-layer plywood with wear-resistant melamine finish, integrated pen slot | |
| Floor mounting hardware | Galvanized steel expansion bolts, 2 fasteners per leg bracket | |
| Seat pivot bushings | Wear-resistant nylon, silent soft-close buffer pads | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame |
Adjustment / rotation / tilt / mobility / storage features
| Seat operation mechanism | Gravity counterweight auto-return tip-up seat, silent soft-close when unoccupied | |
|---|---|---|
| Writing tablet operation | 180-degree swing-away retractable tablet, stows flush inside armrest when not in use | |
| Tablet ergonomic setting | 6.5-degree fixed tilt angle for comfortable writing, 350mm usable writing width | |
| Floor mounting configuration | Fixed cantilever leg design, anchored directly to concrete/raised venue flooring | |
| Row ganging design | Shared horizontal steel underframe connects all seats to form rigid continuous rows | |
| Noise reduction feature | Nylon pivot bushings and soft-close buffers limit operation noise below 30dB | |
| Surface durability feature | Powder-coated metal frame resists scratches and corrosion from high-traffic public 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
| College lecture hall installation | Fixed ganged configuration suits stepped lecture rooms, integrated tablet supports note-taking | |
|---|---|---|
| Theater and performance venue use | High contoured backrest supports 2+ hour seated comfort for audience members | |
| Corporate conference center installation | Quiet tip-up mechanism and professional finish suit formal meeting and event spaces | |
| Government and institutional auditorium use | Fixed anchored design meets public venue safety and flame retardant requirements | |
| Church and multi-purpose hall use | Flexible ganged configuration supports straight or curved row layouts for varied spaces | |
| Recommended companion accessories | Row number plates, aisle LED lights, cup holders, under-seat USB power outlets | |
| 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 | Strength, durability and safety requirements for fixed auditorium seating | |
|---|---|---|
| EN 1021-1:2014 | Upholstered furniture ignitability resistance for smouldering cigarette sources | |
| EN 13501-1:2018 | Construction product fire classification, minimum B-s1,d0 for public seating |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to wood armrest components | |
|---|---|---|
| GB/T 35457-2017 | Safety, strength and durability requirements for theater and public venue seating | |
| GB 20286-2006 | Flame retardant performance requirements for public venue furniture, B1 grade mandatory | |
| GB/T 17657-2013 | Test method for surface physicochemical properties of wood-based panels |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to wood armrest components; 2. GB/T 35457-2017: Safety, strength and durability requirements for theater and public venue seating; 3. GB 20286-2006: Flame retardant performance requirements for public venue furniture, B1 grade mandatory; 4. GB/T 17657-2013: Test method for surface physicochemical properties of wood-based panels; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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