Matte Black Modular Double Spiral Curved Sectional Lounge Sofa (model MSCLS-3500-BLK) is listed under Fabric Office Sofa, with overall dimensions of 3500 × 3500 × 810 mm and main material of Fabric. Load capacity: 700 kg. Certifications: sculptural,organic,form,modular,segmented,construction,armless,low-back,design,contract-grade,lounge,seating. This page consolidates 6 groups of specifications and GB / EN / ANSI/BIFMA standard references, with metric and imperial units. 1 supplier(s) are listed and you can request a quote online.
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Automatic mm / inch conversion · Core engineering specifications
Data source: Structured from factory data; final measured values prevail.
| Overall footprint (widest spiral span) | 3500 x 3500 mm | |
|---|---|---|
| Overall sofa height from floor to top of backrest | 810 mm | |
| Seat height from floor to top of seating surface | 420 mm | |
| Seat depth (front edge to base of backrest) | 670 mm | |
| Seat width per individual modular segment | 750 mm | |
| Integrated low backrest height (above seat surface) | 390 mm | |
| Module segment seam spacing along seating curve | 750 mm | |
| Upholstered edge radius at spiral end protrusions | 120 mm | |
| Central open void diameter at spiral center | 1000 mm | |
| Base contact width along floor per module | 900 mm | |
| Seat cushion thickness (upholstered surface to frame) | 120 mm | |
| Backrest padding thickness at thickest point | 100 mm | |
| Seat Cushion Thickness | 180 mm | |
| Back Cushion Thickness | 160 mm | |
| Leg Height / Floor Clearance | 160 mm |
Net weight / load capacity / users / durability
Data source: Product performance data; verify exact test conditions before procurement.
| Total static load capacity (full sofa) | 700 kg | |
|---|---|---|
| Fabric upholstery abrasion resistance (ASTM D5170) | 250000 double rubs | |
| Leather upholstery abrasion resistance (ASTM D4060) | 150000 cycles | |
| Seat foam density | 45 kg/m³ | |
| Seat foam rebound rate | 60% | |
| Seam stitch pitch | 30 mm | |
| Product net weight | 280 kg | |
| Seat Foam Density / Rebound | 40 kg/m³ / 60% | |
| Upholstery Abrasion Reference | Fabric 60000 cycles; leather-class cover 1.4 mm | |
| Per-seat Load Reference | 130 kg/seat |
Core acceptance fields · Panels / hardware / frame / upholstery
Data source: Subject to the factory material list and inspection report.
| Internal support frame | Kiln-dried solid hardwood with 30mm section thickness | |
|---|---|---|
| Seat core filling | High-resilience polyurethane foam wrapped in 20mm PET wadding | |
| Backrest filling | 35kg/m³ density polyurethane foam with contoured shaping | |
| Exterior upholstery | Matte black faux leather (1.2mm thickness) with stain-resistant finish | |
| Module connecting hardware | Powder-coated steel interlocking brackets, 5mm plate thickness | |
| Floor contact base | Non-marking black rubberized fabric underlay |
Adjustment / rotation / tilt / mobility / storage features
Data source: Functional configuration; the supplier specification prevails.
| Modular configuration | Interlocking segments allow curved layout customization | |
|---|---|---|
| Seating orientation | 360-degree inward-facing wrap-around seating for group interaction | |
| Floor placement | Freestanding legless design requiring no wall anchoring | |
| Edge safety | Fully rounded soft edges eliminate sharp corner impact hazards |
Verified carton / gross weight / assembly / loading data
Data source: Reference for export quotations and container planning.
| Reference Package Count | 1 set / 2 cartons | |
|---|---|---|
| Reference Assembly Time | 40 minutes per set | |
| Reference Module Carton Dimensions | 2200× 1050× 850 mm | |
| Reference Packaging Volume | 1.8 m³/item | |
| Reference Packaged Gross Weight | 110 kg/item |
Recommended spaces / users / usage modes
Data source: Recommended applications based on product form and category.
| Commercial public lobbies | Sculptural form creates high-impact focal point for hotel and office reception areas | |
|---|---|---|
| Open-plan office breakout zones | Circular layout supports casual team discussion and informal collaboration |
EU Market Access Requirements* EN Standards
| EN 1022:2018 | Domestic and contract furniture seating stability test standard | |
|---|---|---|
| EN 12520:2015 | Furniture strength, durability and safety for domestic seating | |
| EN 13759:2008 | Ignition resistance of upholstered furniture components |
US and Canada office-furniture standards
| ANSI/BIFMA X5.4-2020 | Lounge seating standard for public and office spaces | |
|---|---|---|
| ANSI/BIFMA E3-2019 | Furniture sustainability standard for indoor seating |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to internal frame quality | |
|---|---|---|
| GB 20286-2006 | Flame retardant requirements for public place furniture upholstery | |
| GB/T 1952.1-2012 | Strength and durability test methods for sofas |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to internal frame quality; 2. GB 20286-2006: Flame retardant requirements for public place furniture upholstery; 3. GB/T 1952.1-2012: Strength and durability test methods for sofas; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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