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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)	605 × 660 × 1180 mm
Overall assembled dimensions	605 x 660 x 1180 mm
Seat height adjustment range	530 mm
Seat usable width	490 mm
Seat usable depth	505 mm
Backrest height from seat surface	560 mm
Backrest width at lumbar zone	460 mm
Armrest height above seat surface	175 mm
Five-star base diameter	350 mm
Headrest usable width	460 mm
Caster diameter	60 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.

Recommended user weight capacity	150 kg
Net product weight	16 kg
Static load capacity of five-star base	1136 kg
Gas lift stroke length	100 mm
Seat cushion foam density	45 kg/m³
Backrest tilt lock angle	120 degrees
Seat cushion foam thickness	60 mm
Standard warranty period	3 years
Available color variants	3
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%

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 upholstery	High-tensile breathable polyester mesh
Seat cushion core	High-density native cut polyurethane foam
Frame and armrests	Glass fiber reinforced PP engineering plastic
Seat support plate	14mm thick laminated plywood seat pan
Five-star base	350mm diameter reinforced nylon with light gray finish
Casters	60mm diameter dual-wheel PU over nylon casters
Gas lift cylinder	Class 3 50mm diameter carbon steel gas lift
Tilt mechanism	2.5mm thick steel plate lockable free-tilt chassis
Headrest frame and padding	PP frame with matching mesh upholstery
Lumbar support structure	Integrally molded contoured PP lumbar support
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness	14 mm bent plywood/composite reinforced frame

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	Pneumatic height adjustment via side lever, 100mm travel
Backrest tilt function	Lockable free-tilt recline up to 120 degrees with tension control
Headrest adjustment	2D height and angle adjustable curved headrest
Swivel function	360-degree full rotation around gas lift axis
Mobility function	Dual-wheel casters roll on hard and soft floor surfaces
Lumbar support	Contoured integrated lumbar support aligned to natural spine curve
Fixed armrest support	Curved fixed armrests provide forearm support without adjustment
Assembly requirement	Knocked-down assembly with included hardware and Allen key
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.

Carton outer dimensions	670 x 580 x 630 mm
Gross weight per carton	19 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.

Home office workspace	Suitable for 8-hour daily seated work in home study or dedicated home office spaces
Open-plan corporate office	Light commercial rating suitable for employee workstations in open office environments
Student study space	Ergonomic support suitable for university student desks or distance learning workstations
Small meeting room	Appropriate for task seating in small meeting rooms or visitor seating areas
Co-working shared space	Durable mesh construction suitable for high-turnover shared co-working facilities
Hard and soft floor use	PU casters suitable for use on carpet, tile, laminate and hardwood floor surfaces
Adult user fit	Dimensions suit users 185 cm tall aligned to 530 mm seat height range
Recommended Matching Desk Size	2.4 m executive desk

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	European office chair dimensional safety and functional performance standard
EN 1335-2:2018	European office chair strength, durability and stability requirement standard
EN 1022:2018	Domestic and contract seating stability test method standard

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	North American general-purpose office chair durability and safety standard
ANSI/BIFMA X5.11-2015	Heavy person office chair capacity standard for 150kg user loads
Caster rolling durability	100000 cycles

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3324-2017	General technical requirements for metal furniture base and frame components
GB/T 17657-2013	Surface physical and chemical property test methods for wood-based seat support panels

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3324-2017: General technical requirements for metal furniture base and frame components;
2. GB/T 17657-2013: Surface physical and chemical property test methods for wood-based seat support panels;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The High Back Ergonomic Mesh Office Chair with Adjustable Headrest and Fixed Armrests, model OFM-605WH-GR from an unbranded line, presents a streamlined, professional silhouette defined by a tall contoured mesh backrest, matching curved headrest, fixed smoothly shaped armrests, and a compact five-star base finished in light gray. The visual layout balances structured support with an open, breathable aesthetic, avoiding bulky overstyling to fit seamlessly across a range of work environments. Its construction prioritizes durability and long-session comfort through purpose-selected materials. The backrest uses high-tensile breathable polyester mesh stretched over a glass fiber reinforced polypropylene engineering plastic frame, with a matching mesh-upholstered headrest built on a PP frame. The seat features a high-density native cut polyurethane foam core, supported by a laminated plywood seat pan, and topped with a 60mm thick foam cushion at 45kg/m³ density for consistent weight distribution. The reinforced nylon five-star base mounts dual-wheel casters with PU over nylon construction, paired with a Class 3 carbon steel gas lift and a lockable free-tilt chassis formed from thick steel plate. Functional design centers on accessible ergonomic support for extended seated use. A side lever controls pneumatic seat height adjustment, while the backrest offers lockable free-tilt recline up to 120 degrees with adjustable tension control. The 2D headrest adjusts for both height and angle to cradle the neck, integrated contoured lumbar support aligns with the natural spine curve, and fixed curved armrests deliver steady forearm support. The chair enables 360-degree swivel, and its casters roll smoothly across carpet, tile, laminate, and hardwood floors. The model supports a recommended user weight of 150kg, with robust static load capacity for the base to withstand regular daily use. This chair is suited for both residential and commercial spaces, including home offices for daily 8-hour seated work, open-plan corporate employee workstations, university student study areas and distance learning setups, small meeting rooms for task or visitor seating, and high-turnover shared co-working facilities. For procurement, note the product ships in two cartons, requires 40 minutes of assembly per unit, and carries a net weight of 16kg, making it straightforward to stage and deploy across multi-seat installations without specialized handling equipment. The light gray frame finish offers neutral coordination with most existing workspace decor palettes.

High Back Ergonomic Mesh Office Chair with Adjustable Headrest and Fixed Armrests Specifications

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