Name: Charcoal Black Extra Deep Low-Profile 4-Seat Sofa
Brand: Youwei
SKU: 7ZWNU2

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PRODUCT MODULE 01 / 06

Physical Dimensions

Automatic mm / inch conversion · Core engineering specifications

Data source: Structured from factory data; final measured values prevail.

Overall dimensions (W × D × H)	3400 × 1100 × 780 mm
Seat height	440 mm
Seat depth per position	680 mm
Armrest height	530 mm
Backrest height above seat	340 mm
Floor clearance under base	30 mm
Armrest width	280 mm
Throw pillow size	450 x 450 mm
Cushion thickness (seat)	250 mm
Seat Cushion Thickness	180 mm
Back Cushion Thickness	160 mm
Leg Height / Floor Clearance	160 mm

PRODUCT MODULE 02 / 06

Weight, Load & Performance

Net weight / load capacity / users / durability

Data source: Product performance data; verify exact test conditions before procurement.

Total static weight capacity	545 kg
Seat foam density	45 kg/m³
Foam rebound rate	60%
Upholstery Martindale abrasion resistance	50000 cycles
Seam stitch pitch	30 mm per 100 mm
Net product weight	150 kg
Recommended maximum occupancy	4 adults
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

PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

Data source: Subject to the factory material list and inspection report.

Internal frame	Kiln-dried solid wood frame, 30 mm section thickness
Seat support system	Sinuous spring suspension, 3.8 mm wire gauge
Seat cushion core	45 kg/m³ high-density polyurethane foam with 30 mm soft down wrap
Back cushion filling	35 kg/m³ foam with fiberfill topper
Upholstery fabric	Matte charcoal black performance tech fabric, 350 gsm weight
Armrest construction	Integral padded curved arm over wood frame, same upholstery as body
Base structure	Low-profile upholstered block base with hidden plastic glide feet
Throw pillows	Matching fabric covers, fiber-filled inserts
Hardware	Zinc-plated steel connection hardware, anti-rust coated
Timber Frame Section / Moisture	Primary section ≥30 × 50 mm; recommended moisture 12%
Spring / Webbing Specification	Sinuous spring wire 4 mm; elastic webbing 70 mm wide
Leg Connector Specification	Reference M8-M10 with at least 1 mechanical fixing per leg

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seating configuration	Fixed four-position straight layout with two divided deep seat cushions
Armrest function	Wide flat padded armrests support resting items and arm weight for all seated positions
Cushion design	Loose reversible seat and back cushions for even wear over service life
Base glides	Hidden non-marking floor glides prevent floor scuffing on hard surfaces
Assembly requirement	Two-section knock-down assembly connecting left and right sofa segments
Accent pillow positioning	Four included throw pillows can be repositioned for lumbar or neck support
Edge support	Reinforced seat edge prevents sagging during long-term entry/exit use
Cushion Service Configuration	Recommended 2removable/replaceable cushion methods

PRODUCT MODULE 05 / 06

Packaging & Logistics

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

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

Data source: Recommended applications based on product form and category.

Primary residential use	Open-plan living room main lounge seating for family and guest use
Contract lounge use	Modern office reception areas, lounge zones and creative studio waiting spaces
Studio apartment use	Open loft and studio spaces as the primary seating anchor for entertainment zones
Recommended pairing	Pair with low-profile glass or stone coffee tables at 400 mm height for ergonomic access
Placement requirement	Position against solid wall to support low back profile, leave 50 mm rear clearance for air circulation
User suitability	Suitable for adults up to 135 kg per seating position for daily long-duration use

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 12520:2015	Furniture strength, durability and safety requirements for domestic seating
EN 1021-1:2014	Upholstered furniture flammability test for smouldering cigarette ignition resistance

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.4-2020	Lounge seating durability and safety standard for non-task residential/contract seating
ANSI/BIFMA X7.1-2022	Standard for formaldehyde and VOC emissions from furniture components

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3324-2017	General technical requirements for wooden furniture, applicable to internal frame construction
GB 20400-2006	Leather and fur safety limits; apply for fabric formaldehyde and harmful substance limits
GB/T 1952.1-2022	Test methods for sofas, used for structural strength and durability validation

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to internal frame construction;
2. GB 20400-2006: Leather and fur safety limits; apply for fabric formaldehyde and harmful substance limits;
3. GB/T 1952.1-2022: Test methods for sofas, used for structural strength and durability validation;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Youwei Charcoal Black Extra Deep Low-Profile 4-Seat Sofa, model SOF-4S-CURV-DEEP-BLK, delivers a sleek modern minimalist silhouette defined by its streamlined low-profile build, softly curved integrated armrests, and generous deep-seat proportions. Its straight four-position layout features two divided overstuffed seat cushions, paired with matching upholstered block base that sits close to the floor for a grounded, unobtrusive visual presence, complemented by four coordinated 450 mm throw pillows for subtle textural balance. Built for lasting daily use, the sofa is constructed around a kiln-dried solid wood internal frame with 30 mm section thickness, secured with zinc-plated, anti-rust coated steel connection hardware. The seat support system uses sinuous spring suspension with 3.8 mm wire gauge, topped with seat cored from 45 kg/m³ high-density polyurethane foam wrapped in 30 mm soft down, backed by cushions filled with 35 kg/m³ foam and a fiberfill topper. The matte charcoal black performance tech fabric upholstery weights 350 gsm, with reinforced seat edges to prevent long-term sagging from regular entry and exit. Wide curved armrests are padded integral to the frame, finished in the same upholstery as the sofa body, while the base is fitted with hidden non-marking plastic glide feet to protect hard flooring from scuffs. Loose, reversible seat and back cushions support even wear across the surface over time, and the wide flat armrests accommodate both resting arm weight and small personal items. The four included throw pillows can be repositioned as needed for targeted lumbar or neck support. This sofa fits a range of residential and contract spaces: it serves as a primary lounge anchor for open-plan family living rooms, open lofts, and studio apartment entertainment zones, and works equally well in modern office reception areas, creative studio waiting spaces, and shared employee lounge zones. For optimal ergonomic pairing, it is designed to coordinate with 400 mm height low-profile glass or stone coffee tables, and is best positioned against a solid wall to complement its low back profile, with a small rear clearance to support air circulation. Each seating position supports adults up to 135 kg for long-duration daily use, with a total static weight capacity of 545 kg for four adult occupants. Procurement teams and residential buyers should note the sofa ships in two cartons requiring two-section knock-down assembly of left and right segments, with a reference assembly time of 40 minutes per set, and plan for access and handling appropriate for its packaged dimensions and net product weight.

Charcoal Black Extra Deep Low-Profile 4-Seat Sofa Specifications

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