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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)	635 × 700 × 1215 mm
Seat width	505 mm
Seat depth	500 mm
Seat height adjustment range upper value	525 mm
Backrest width	430 mm
Backrest height	600 mm
Headrest width	315 mm
Headrest vertical lift travel	60 mm
Armrest height above seat	200 mm
Five-star base diameter	680 mm
Caster diameter	60 mm
Total chair depth upper value	725 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.

Net weight	18 kg
Maximum recommended static load	136 kg
Seat cushion foam density	45 kg/m³
Seat cushion foam thickness	80 mm
Backrest mesh Martindale abrasion resistance	50000 cycles
Gas lift height adjustment cycle durability	100000 cycles
Standard warranty period	7 years
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

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	Breathable woven polyester mesh
Back support frame	PA+fiberglass reinforced nylon
Seat cushion core	High-density cold-cured polyurethane foam
Seat base support plate	12 mm thick plywood
Seat underside shell	Injection-molded black polypropylene
Armrest pads	Padded polyurethane soft-touch surface
Armrest support structure	Reinforced nylon uprights
Five-star base	Black reinforced nylon
Gas lift cylinder	Class 3 steel pneumatic lift
Casters	60 mm polyurethane twin-wheel casters
Headrest cushion	Breathable mesh over curved foam pad
Integrated lumbar support	Molded foam pad integrated into mesh back

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	Pneumatic gas lift adjusts seat height 85 mm
Headrest adjustment	Vertical height adjustment with 60 mm upward travel
Swivel function	360° full rotation around central gas lift axis
Backrest tilt function	Center-tilt mechanism with 125° maximum recline
Caster mobility	Twin-wheel casters roll freely on hard and carpeted floors
Lumbar support	Fixed contoured lumbar zone aligned to natural spine curve
Armrest support	Fixed height padded armrests support forearm at seated typing position
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.

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 workstation	Suitable for 8-hour daily desk work for administrative and operational staff
Home office workspace	Compact footprint fits standard home desks for remote work use
Conference room seating	Uniform professional appearance suitable for meeting room deployment
Study and student desk use	Adjustable height fits teen and adult users for homework and study
Reception area task seating	Professional black finish matches standard office reception decor
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	Applies to office chair dimensional and safety requirements
EN 1335-2:2018	Applies to office chair structural strength and durability
EN 1335-3:2018	Applies to office chair test methods for stability and load

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	Applies to general purpose office chair performance and durability
Caster rolling durability	100000 cycles

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applies to office chair dimensional stability and strength requirements
GB/T 10357.3-2013	Applies to chair strength and durability test methods
GB 28007-2011	Applies to office chair safety and structural performance requirements

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office chair dimensional stability and strength requirements;
2. GB/T 10357.3-2013: Applies to chair strength and durability test methods;
3. GB 28007-2011: Applies to office chair safety and structural performance requirements;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The High Back Adjustable Mesh Ergonomic Office Task Chair (model OFCH-ERG-MESH-635, unbranded) presents a streamlined, professional silhouette defined by its tall, contoured mesh backrest, integrated adjustable headrest, and fixed padded armrests, finished in a consistent professional black that aligns with standard commercial and residential work decor. Its five-star base sits beneath a central pneumatic column, supporting balanced, stable placement across work surfaces. Constructed for long-term regular use, the chair pairs a breathable woven polyester mesh backrest framed in PA+fiberglass reinforced nylon with a padded fabric seat built on a 12mm thick plywood support plate and injection-molded black polypropylene underside shell. The seat cushion uses high-density cold-cured polyurethane foam, with soft-touch polyurethane armrest pads mounted on reinforced nylon uprights. The black reinforced nylon five-star base is fitted with polyurethane twin-wheel casters, connected to a Class 3 steel pneumatic gas lift that enables core adjustability. Designed for seated comfort across extended work sessions, the chair supports 360-degree swivel rotation around its central axis, pneumatic seat height adjustment, vertical headrest adjustment with upward travel, and a center-tilt mechanism with 125 degrees of maximum recline. A fixed contoured lumbar zone aligns with the natural spine curve, while fixed-height armrests position forearms for ergonomic typing posture. The twin-wheel casters roll freely across both hard flooring and carpeted surfaces. This chair is suited for a range of spaces including open-plan office workstations for 8-hour daily use by administrative and operational staff, compact home office workspaces for remote work, conference rooms requiring uniform professional seating, student and adult study desks, and reception areas with standard office decor; it is designed to pair with desks including 2.4m executive desks. Procurement teams and individual buyers should note the chair ships in two cartons per set, with a reference assembly time of 40 minutes per unit. It carries a 7-year standard warranty, with a maximum recommended static load of 136kg, and offers durable material performance including abrasion-resistant mesh and long-cycle gas lift durability for regular use.

High Back Adjustable Mesh Ergonomic Office Task Chair Specifications

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