| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall chair dimensions | 850 x 850 x 720 mm | |
|---|---|---|
| Seat height | 420 mm | |
| Seat diameter | 500 mm | |
| Backrest height | 300 mm | |
| Backrest thickness | 175 mm | |
| Ottoman diameter | 380 mm | |
| Ottoman height | 400 mm | |
| Seat opening gap width | 180 mm | |
| Overall chair base diameter | 850 mm | |
| Seat cushion thickness | 150 mm | |
| Ottoman cushion thickness | 80 mm | |
| Backrest wrap angle | 270 degrees | |
| 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
| Chair static load capacity | 120 kg | |
|---|---|---|
| Chair net weight range | 18 kg | |
| Foam indentation load deflection (seat) | 35 kg/m³ | |
| Fabric abrasion resistance (Martindale) | 30000 cycles | |
| Foam resilience rate (seat) | 60% | |
| Seat foam compression set | 10% | |
| 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 | |
| Five-star Base Static Load Reference | Acceptance target ≥120 kg; chair reference load 150 kg |
Core acceptance fields · Panels / hardware / frame / upholstery
| Outer upholstery (chair & ottoman) | Woven polyester blend fabric, matte finish | |
|---|---|---|
| Seat & backrest padding | High-resilience polyurethane foam, layered structure | |
| Internal support frame | Plywood solid wood composite frame, curved to match cylindrical shape | |
| Chair base bottom | Non-slip fabric or felt glide base, no exposed legs | |
| Ottoman internal structure | Cylindrical plywood shell with foam wrapping | |
| Fabric stitching | Color-matched lockstitch seams on vertical joint lines | |
| Seat cushion base support | Plywood deck panel under foam cushion | |
| Ottoman base support | Solid fiberboard bottom panel with felt glide ring | |
| Foam fire retardant treatment | Fire-retardant impregnated polyurethane foam core | |
| 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 |
Adjustment / rotation / tilt / mobility / storage features
| C-shaped entry design | Front gap allows forward seating access without rotating the chair, fixed non-adjustable backrest wrap-around support | |
|---|---|---|
| 360-degree static seating orientation | Chair remains stationary on floor; users can face any direction by adjusting position on the round seat | |
| Matching ottoman function | Serves as footrest, extra guest seat, or small side table with a tray on top | |
| Modular grouping capability | Multiple C-chairs can be arranged in clusters, semicircles, or facing configurations for lounge or waiting areas | |
| Fully upholstered exterior | All outer surfaces are padded and fabric-covered for impact safety in public spaces; no sharp exposed edges | |
| Fixed non-adjustable seat | Seat height, back angle, and cushion position are fixed at factory settings, no user-adjustable mechanisms | |
| Quiet floor protection | Felt glide base prevents scuffing of hard floor surfaces and reduces noise during position adjustment | |
| Semi-enclosed privacy support | 270-degree wrapped backrest creates a semi-private seating nook suitable for focused reading or short one-on-one conversations | |
| Recline Angle / Lock Reference | 125° with 3 suggested 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
| Packaging units (chair + 1 ottoman) | 2 cartons | |
|---|---|---|
| Chair carton dimensions | 900 x 900 x 770 mm | |
| Ottoman carton dimensions | 430 x 430 x 450 mm | |
| Chair gross weight | 21 kg | |
| Ottoman gross weight | 6 kg | |
| Total volume per set | 0.708 CBM | |
| Assembly time | 0 minutes | |
| 20ft container loading quantity (sets of 1 chair + 1 ottoman) | 32 sets | |
| 40ft HQ container loading quantity | 78 sets | |
| Warranty period for commercial use | 3 years |
Recommended spaces / users / usage modes
| Office break-out areas | Suitable for open-plan office rest zones and casual meeting areas, offering flexible informal seating for short conversations | |
|---|---|---|
| Hotel lobby seating | Suitable for hotel lobbies, lounge bars, and waiting areas, arranged in clusters to accommodate solo guests or small groups | |
| University & library common spaces | Suitable for student lounges, library reading nooks, and collaborative study areas, with color options to match campus interior schemes | |
| Exhibition & showroom waiting zones | Suitable for brand showrooms, exhibition halls, and event spaces as temporary or permanent visitor seating, with customizable fabric colors to match brand identity | |
| Residential living & study rooms | Suitable for home living rooms, reading corners, or children's play areas as decorative casual seating with soft fully-upholstered safety features | |
| Co-working space focus nooks | Suitable for co-working office silent zones as semi-private individual seating, supporting 2 hour focused work sessions with partial acoustic isolation | |
| Shopping mall rest areas | Suitable for shopping mall public rest zones and department store customer waiting areas, supporting high-frequency daily use by mixed visitor groups | |
| Recommended Matching Desk Size | 2.4 m executive desk |
EU Market Access Requirements* EN Standards
| Safety of upholstered furniture | EN 1022:2018 applies to static load and stability testing of single-seat seating | |
|---|---|---|
| Foam flammability | EN 1021:2014 cigarette test and EN 1021:2014 match test apply to upholstered foam assemblies | |
| Office furniture stability | EN 1335:2018 stability test methods are applicable for lounge seating used in office break areas | |
| Upholstered furniture durability | EN 15202:2013 applies to strength and durability testing of upholstered seating for non-domestic use |
US and Canada office-furniture standards
| Seating performance | ANSI/BIFMA X2017 static load and durability tests apply to commercial lounge seating |
|---|
Standards applicable to China-market projects
| Upholstered furniture safety | GB 28007 applies to safety requirements for upholstered furniture intended for public use | |
|---|---|---|
| Formaldehyde emission | GB 18580 E1 level limit applies to internal wood-based panel components | |
| Flammability of upholstered furniture | GB 20286 Level 1 flammability rating is recommended for public space lounge seating | |
| Soft furniture fill material safety | GB 18401 Class B safety standard applies to upholstery fabric and foam fill in direct skin contact products |
This product must meet the following technical requirements: 1. Upholstered furniture safety: GB 28007 applies to safety requirements for upholstered furniture intended for public use; 2. Formaldehyde emission: GB 18580 E1 level limit applies to internal wood-based panel components; 3. Flammability of upholstered furniture: GB 20286 Level 1 flammability rating is recommended for public space lounge seating; 4. Soft furniture fill material safety: GB 18401 Class B safety standard applies to upholstery fabric and foam fill in direct skin contact products; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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