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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)	680 × 680 × 1280 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 weight	21 kg
Back tilt cycles	100,000 cycles
Gas-lift height cycles	100,000 cycles
Caster rolling durability	100,000 cycles
Seat foam density	45 kg/m3
Seat foam rebound	45%
Static vertical load on base	1,130 kg
Color count	2 colors
Warranty	5 years

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	Light gray breathable mesh over a black contoured steel or engineered-polymer support frame
Seat surface	Light gray mesh or woven textile cover over a shaped high-density foam cushion
Headrest	Curved padded cushion wrapped in light gray mesh fabric with a black rear support bracket
Armrests	Black molded polyurethane pads on black height-adjustable support posts with polished accent rings
Frame and mechanism	Black painted steel back supports and multi-function metal tilt mechanism under the seat
Base and casters	Polished aluminum-alloy five-star base with 60 mm black nylon twin-wheel casters

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 lift with 90 mm travel, operated by a side lever for desk heights from 450 to 540 mm
Synchronized recline	Multi-position synchro-tilt mechanism reclines the back to 122 degrees while coordinating seat tilt and locking through the under-seat control
Lumbar and head support	Curved height-position lumbar zone and forward-curved headrest support the lower back and neck during reclined work or breaks
Arm support	Padded height-adjustable arm posts provide 70 mm lift and support forearms at 230 mm above the seat

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	Suits individual workstations and home offices requiring 450 to 540 mm seat height, recline support and rolling mobility
Meeting or focus room	Suitable for long meetings and computer work because the high back, headrest, lumbar curve and padded arms support changing postures

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1	Applies to office-chair dimensional safety, including seat, back and adjustment geometry
EN 1335-2	Applies to office-chair safety requirements such as stability, strength and structural failure prevention
EN 1335-3	Applies to office-chair test methods for verifying safety and structural durability
EN 1022	Applies to domestic and contract seating stability under intended use

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1	Applies to office chairs for strength, durability, stability, back force, swivel and caster testing
BIFMA e3 level criteria	Applies to optional furniture sustainability, material and chemical-content documentation

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 10357.3	Applies to chair strength and durability test methods for back, seat and leg loading during procurement verification
GB/T 28004.1	Applies to general technical requirements for swivel office chairs, including safety, dimensions and stability
GB 17927	Applies to assessment of degradation properties of upholstery furniture fabric and leather under friction

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 10357.3: Applies to chair strength and durability test methods for back, seat and leg loading during procurement verification;
2. GB/T 28004.1: Applies to general technical requirements for swivel office chairs, including safety, dimensions and stability;
3. GB 17927: Applies to assessment of degradation properties of upholstery furniture fabric and leather under friction;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

GENERATED EXPORTS

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Export data is generated from the current published product record.

Technical Report PDF

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PDF · EHC-HM-PA5-01

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English title, specifications, materials, standards and purchasing fields.

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Product Description

The High-Back Ergonomic Mesh Office Chair with Headrest, model EHC-HM-PA5is an unbranded ergonomic task chair designed for sustained desk use. Its overall form is tall and structured, with a light gray breathable mesh back and matching seat covering set against black support components. The contoured back rises to a curved, padded headrest wrapped in light gray mesh and held by a black rear bracket. Below, the polished aluminum-alloy five-star base gives the chair a refined visual anchor, while black nylon twin-wheel casters maintain a functional, understated appearance. The chair measures 680 by 680 by 1280 millimeters, with 540 millimeters of clear width between the armrests. Its seat cushion has a finished thickness of 90 millimeters, the backrest padding is 70 millimeters thick, and the lumbar support zone is 240 millimeters high. Construction combines a shaped high-density foam seat cushion, mesh or woven textile upholstery, black molded polyurethane arm pads, painted steel back supports, a multi-function metal tilt mechanism, a gas-lift steel column, and 60 millimeter black nylon casters. The seat foam has a density of 45 kilograms per cubic meter and 45 percent rebound. Practical adjustment is centered on a pneumatic seat-height lift with 90 millimeters of travel, controlled by a side lever and suited to desk heights from 450 to 540 millimeters. The multi-position synchro-tilt mechanism coordinates back and seat movement, reclines to 122 degrees, and locks through the under-seat control. The height-position lumbar curve and forward-curved headrest provide support during upright work, reclined tasks, and short breaks. Height-adjustable arm posts lift 70 millimeters and place padded forearm support 230 millimeters above the seat. The chair swivels, rolls, and supports a recommended user weight of 150 kilograms. Durability ratings include 100,000 cycles for back tilt, gas-lift height adjustment, and caster rolling. The model is appropriate for individual office workstations, home offices, meeting rooms, and focus rooms where long meetings or computer work call for posture changes. Each set is supplied in two cartons, with a packaged gross weight of 23 kilograms, carton dimensions of 850 by 420 by 720 millimeters, and a total carton volume of 0.26 cubic meter. Reference assembly time is 40 minutes per set. For bulk purchasing, a 20-foot general-purpose container can hold 135 sets at 85 percent space utilization. Buyers should plan for assembly, confirm delivery access around the packaged dimensions, and match the chair’s 450 to 540 millimeter seat-height range with intended work surfaces.

High-Back Ergonomic Mesh Office Chair with Headrest Specifications

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