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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)	650 × 660 × 1290 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	136 kg
Net weight	16.5 kg
Static seat verification load	680 kg
Backrest cyclic durability	120000 cycles
Gas-lift cycle life	100000 height-adjustment cycles
Caster rolling durability	100000 cycles
Armrest vertical static load	45 kg per arm
Seat foam density	45 kg/m3 molded polyurethane
Fabric abrasion resistance	50000 Martindale cycles
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 construction	Black flexible mesh stretched over a molded black nylon outer frame
Seat surface	Black woven polyester upholstery over molded polyurethane foam
Seat support shell	10 mm molded polypropylene load shell under the cushion
Headrest	Black mesh center with padded black frame and side angle-adjustment joint
Armrests	One-piece black nylon T-arms with fixed horizontal pads
Lift and mechanism	50 mm black steel gas-lift tube connected to a steel tilt mechanism

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Height adjustment	Pneumatic seat-height adjustment through a 100 mm stroke using the right-side lever
Recline and lock	Synchro tilt moves seat and back together through a 24 degree range with lock positions
Tension adjustment	Rear rotary knob adjusts backward resistance for users up to 136 kg
Headrest adjustment	Headrest provides height and angle positioning with a side pivot joint

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

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

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

Office workstation	Suitable for individual desk work in open offices, home offices, and managerial workstations due to lumbar, head, arm, and recline support
Daily task users	Designed for users requiring 8 hour seated task support with swivel mobility and 136 kg weight capacity

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	Applicable standards and test results require confirmation
EN 1335-2:2018+AC:2019	Applicable standards and test results require confirmation
EN 1335-3:2020	Applicable standards and test results require confirmation

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017 (R2022)	Applicable standards and test results require confirmation

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 10357.6-2013	Applicable standards and test results require confirmation

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 10357.6-2013: Applicable standards and test results require confirmation;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Black Ergonomic Mesh Office Chair, model EMH-620-BK, presents a professional high-back profile finished entirely in black. Its flexible black mesh backrest is stretched over a molded black nylon frame, complemented by a mesh-centered headrest set within a padded black frame. The black woven polyester seat sits over molded polyurethane foam, supported beneath by a 10 mm molded polypropylene load shell. Fixed one-piece black nylon T-arms with horizontal pads frame the seat, providing a clear width of 540 mm between armrests. The chair rests on a five-star nylon base fitted with twin-wheel casters, with a 50 mm black steel gas-lift tube connecting to a steel tilt mechanism. Overall dimensions are 650 by 660 by 1290 mm, with a 90 mm finished seat cushion, 70 mm backrest padding, and a 240 mm high lumbar support zone. Designed for extended desk work, the chair combines pneumatic seat-height adjustment through a 100 mm stroke via a right-side lever with a synchro tilt mechanism that moves the seat and back together through a 24 degree range and offers lock positions. A rear rotary knob controls backward resistance, accommodating users up to the rated 136 kg capacity. The headrest adjusts in both height and angle through a side pivot joint, while the swivel base and casters support easy movement around a workstation. This unbranded model is suited to individual desk tasks in open-plan offices, home offices, and managerial workstations where lumbar, head, arm, and recline support are priorities. It is intended for daily users requiring eight hours of seated task support. Durability figures include a static seat verification load of 680 kg, 120,000 backrest cycles, 100,000 gas-lift height-adjustment cycles, 100,000 caster rolling cycles, and a 45 kg vertical static load rating per arm. The chair has a net weight of 16.5 kg. For procurement and installation planning, each set ships in two cartons with a packaged gross weight of 23 kg and total carton volume of 0.26 cubic meters; reference carton dimensions are 850 by 420 by 720 mm. Assembly time is at 40 minutes per set, and a 20-foot general-purpose container can hold 135 sets at 85 percent space utilization. Buyers should note the fixed armrest configuration and confirm that the mesh-back, fabric-seat construction and black finish match the intended workspace.

Black Ergonomic Mesh Office Chair with Adjustable Headrest Specifications

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