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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)	670 × 640 × 1090 mm
Backrest width	505 mm
Backrest height	580 mm
Seat width	490 mm
Seat depth	460 mm
Seat cushion thickness	50 mm
Seat height adjustment range	520 mm
Armrest height above seat	180 mm
Five-star base diameter	640 mm
Backrest top height above seat	715 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	11 kg
Maximum recommended static load	200 kg
Recommended user height range	1850 mm
Seat foam density	45 kg/m³
Seat foam rebound rate	45%
Back mesh abrasion resistance	50000 Martindale cycles
Caster rolling durability	100000 cycles
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 frame	Glass-fiber reinforced polypropylene
Seat core padding	High-density molded polyurethane foam
Seat surface fabric	Woven polyester fabric
Fixed armrests	Injection-molded polypropylene
Gas lift cylinder	Carbon steel Class 4 gas lift
Tilt mechanism	2.5mm thick steel butterfly plate
Five-star base	Reinforced nylon composite
Casters	60mm diameter nylon twin-wheel casters
Internal seat frame	1.2mm thick stamped steel
Seam stitch pitch	8 stitches per 30mm
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Height adjustment	100mm vertical stroke via side-activated gas lift lever
360-degree swivel	Full rotation enabled by central gas lift and base assembly
Recline function	135-degree maximum back tilt with tension adjustment
Tilt lock	Single-position upright lock for focused work
Mobility	Smooth rolling on hard floors and low-pile carpet via twin-wheel casters
Lumbar support	Contoured structured mesh panel aligned to lower back
Fixed arm support	Stable T-armrests at 180mm above seat for forearm rest
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 office workstations	Fits standard desk heights for daily employee task work
Home office study spaces	Compact footprint suitable for small home work areas
Conference room seating	Fixed armrests and swivel function suit meeting room use
Training room setups	Lightweight mobile design supports reconfigurable learning spaces
Height range 1500-1850mm users	520 mm seat height accommodates most adult user heights
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 dimensional and safety requirements for office task chairs
EN 1335-2:2018	Applies to strength, durability and stability requirements
EN 1335-3:2009	Applies to test methods for verifying office chair compliance

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 safety and durability requirements
ANSI/BIFMA X5.11-2015	Applies to large occupant office chair load rating requirements
Five-star base static load rating	1136 kg

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applies to size measurement and dimensional tolerance of office chairs
GB/T 10357.3-2013	Applies to mechanical strength and durability testing for office chairs
GB 18584-2001	Applies to indoor decoration material limits for formaldehyde emission

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to size measurement and dimensional tolerance of office chairs;
2. GB/T 10357.3-2013: Applies to mechanical strength and durability testing for office chairs;
3. GB 18584-2001: Applies to indoor decoration material limits for formaldehyde emission;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Mid-Back Ergonomic Mesh Swivel Office Task Chair with Fixed Armrests, model MB-FA-MESH-670, is an unbranded ergonomic mesh office chair designed for versatile workplace and home use. Its visual form balances understated professional styling with functional structure: a gently curved mid-back mesh panel paired with a neatly padded rectangular seat, supported by a sleek five-star base and streamlined T-shaped fixed armrests, creating a compact, polished silhouette that integrates seamlessly into formal and casual work environments without unnecessary ornamentation. Constructed for balanced durability and seated comfort, the chair features a breathable woven polyester mesh backrest set in a glass-fiber reinforced polypropylene frame, paired with a seat upholstered in woven polyester fabric over high-density molded polyurethane foam. The fixed T-armrests are made from injection-molded polypropylene, while the base uses reinforced nylon composite fitted with 60mm diameter nylon twin-wheel casters. Core functional components include a carbon steel Class 4 gas lift, a 2.5mm thick steel butterfly plate tilt mechanism, and abrasion-resistant mesh rated for 50000 Martindale cycles, with casters tested for 100000 rolling cycles for consistent long-term use. The chair weighs 11 kg, with a maximum recommended static load of 200 kg, and supports users up to 1850 mm tall. Practical functions are tailored to common work routines: a side-activated lever enables 100mm of vertical seat height adjustment to a maximum seat height of 520 mm, full 360-degree swivel supports easy reach across adjacent work surfaces, and a 135-degree maximum back tilt with adjustable tension lets users shift between focused and relaxed postures, with a single-position upright lock for concentrated task work. The contoured mesh panel delivers built-in lumbar support aligned to the lower back, fixed armrests sit 180 mm above the seat to hold forearms comfortably during typing or discussion, and twin-wheel casters roll smoothly across hard floors and low-pile carpet. This chair is suited for open office workstations, compact home office study spaces, conference rooms, and reconfigurable training room setups, and pairs appropriately with a 2.4 m executive desk. For procurement, note that each unit ships in two cartons, requires 40 minutes of assembly per set, carries a packaged gross weight of 23 kg per set, and allows 135 sets to be loaded in a 20GP container at 85% space utilization, with no custom branding or modified configuration options available at the base offering level.

Mid-Back Ergonomic Mesh Swivel Office Task Chair with Fixed Armrests Specifications

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