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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)	620 × 640 × 1130 mm
Finished Seat Cushion Thickness	90 mm
Backrest Padding Thickness	70 mm
Lumbar Support Zone Height	240 mm
Clear Width Between Armrests	540 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.

Maximum static load capacity	120 kg
Net product weight	13 kg
Seat cushion foam density	45 kg/m³
Gas lift class rating	Class 3
Caster rolling durability	40000 cycles
Tilt mechanism lock angle	12 degrees backward
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

PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

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

Backrest mesh	Breathable black polyester mesh stretched over nylon frame
Seat cushion core	40 mm thick high-resilience polyurethane foam
Seat surface upholstery	Black woven polyester fabric with 30000 double-rub abrasion rating
Armrest construction	Integrated fixed loop armrests with black matte nylon finish
Height adjustment mechanism	Chrome-plated steel Class 3 gas lift with 100 mm stroke
Base structure	320 mm radius black nylon five-star base with 2.5 mm wall thickness
Caster construction	50 mm diameter black polyurethane dual-wheel casters
Tilt chassis	2.5 mm thick steel tilt mechanism with tension adjustment knob
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

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	100 mm vertical travel via pneumatic gas lift activated by side lever
Backrest tilt function	12 degree backward free-float tilt with adjustable tension control
360-degree swivel rotation	Full 360 degree horizontal rotation around central gas lift axis
Smooth rolling mobility	Dual-wheel casters designed for both hard flooring and low-pile carpet
Fixed arm support	Integrated fixed loop armrests positioned at 210 mm above seat surface for forearm support
Weight-activated tilt tension	Automatic tension calibration for user weight between 120 kg
Recline Angle / Lock Reference	125° with 3suggested lock positions
Tilt Tension User-weight Range	Reference adjustment coverage 120 kg
Rotation / Mobility Configuration	360° swivel with 5-caster multidirectional movement

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Gross shipping weight	15 kg
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

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

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

Open-plan office workstations	Suitable for 8-hour daily desk work at standard 760 mm office desks
Home office study spaces	Compact 620 mm width fits small home work areas without excessive footprint
Conference and meeting rooms	Neutral black finish and mid-back support suit short to medium duration meetings
Shared hot-desking environments	Durable mesh and nylon construction resists frequent user turnover wear
Recommended Matching Desk Size	2.4 m executive desk
Reference Daily Use Duration	8 hours/day; confirm by ergonomic testing

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	Applicable standard for office chair dimensional, strength and stability requirements
EN 1022:2018	Applicable standard for domestic and contract seating stability testing

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	Applicable standard for general-purpose office chair performance and safety
ANSI/BIFMA X5.11-2015	Applicable standard for office chair weight capacity verification up to 136 kg

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB 28007-2011	Applicable standard for safety of caster-equipped office seating for adult use

Standardized tender description text

This product must meet the following technical requirements:
1. GB 28007-2011: Applicable standard for safety of caster-equipped office seating for adult use;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Ergonomic Mid-Back Mesh Swivel Office Chair, model OFM-M01-BK, is an unbranded office task chair designed for reliable, comfortable seated support across professional and personal work settings. Visually, it features a streamlined, neutral all-black profile with clean, angular lines suited to a wide range of interior design schemes, with balanced proportions that avoid bulky overhang even in compact work areas. The chair’s construction prioritizes durability and breathability: its backrest uses taut, breathable black polyester mesh stretched over a rigid nylon frame, paired with a seat upholstered in hard-wearing black woven polyester fabric rated for 30,000 double-rub abrasions. The seat core holds 40 mm thick high-resilience polyurethane foam for consistent cushioning, supported by a 14 mm bent plywood internal board. Fixed loop armrests carry a matte black nylon finish, while height adjustment relies on a chrome-plated Class 3 steel gas lift. The 320 mm radius five-star base is built from 2.5 mm thick black nylon, fitted with 50 mm black polyurethane dual-wheel casters, and the 2.5 mm thick steel tilt chassis includes an integrated tension adjustment knob. Practical functions support flexible, comfortable daily use: a side lever activates 100 mm of vertical seat height travel, the backrest offers 12 degrees of backward free-float tilt with adjustable tension and three selectable lock positions, the seat rotates a full 360 degrees, and the dual-wheel casters roll smoothly across both hard flooring and low-pile carpet. Fixed armrests sit 210 mm above the seat to support forearms, and the weight-activated tilt system automatically calibrates tension to match user weight, supporting a maximum static load of 120 kg. This chair is well-suited for open-plan office workstations rated for 8 hours of daily use at standard 760 mm office desks, compact home office study spaces where its 620 mm width avoids excessive footprint, short to medium duration meetings in conference rooms, and high-traffic shared hot-desking environments where its resilient mesh and nylon construction stands up to frequent user turnover. For procurement, note each unit ships in two cartons, requires 40 minutes of assembly per set, and the chair’s net weight is 13 kg, with a packaged gross weight of 23 kg per set. Buyers should confirm ergonomic fit for intended users prior to bulk purchase, and note the recommended matching desk size is a 2.4 m executive desk.

Ergonomic Mid-Back Mesh Swivel Office Chair Specifications

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