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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 × 640 × 1055 mm
Seat width	490 mm
Seat depth	430 mm
Seat height (adjusted maximum)	515 mm
Backrest height	550 mm
Armrest height above seat	180 mm
Five-star base diameter	640 mm
Seat cushion thickness	60 mm
Frame outer width between armrests	420 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 static load capacity	200 kg
Seat foam density	45 kg/m³
Seat foam rebound rate	45 %
Fabric abrasion resistance (Martindale)	50000 double rubs
Chair net weight	16 kg
Caster rolling durability	100000 cycles
Gas lift stroke length	100 mm
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.

Primary frame and armrests	White fiber-reinforced PP engineering plastic
Backrest upholstery	Light gray breathable woven mesh
Seat upholstery	Teal woven polyester fabric over foam pad
Seat core substrate	12mm thick molded plywood pan
Five-star base	White nylon reinforced plastic
Casters	60mm black dual-wheel nylon casters
Gas lift cylinder	Black powder-coated steel, Class 3 rated
Tilt mechanism	2.5mm thick steel butterfly chassis with black finish
Seam stitch pitch	8 stitches per inch
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness	14 mm bent plywood/composite reinforced frame
Five-star Base Material Thickness	Metal base wall 3.5 mm; diameter 700 mm

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 with 100mm travel, activated by under-seat lever
Swivel function	360-degree full rotation around central gas lift axis
Tilt function	Lockable upright position, 20-degree rearward recline with tension control
Mobility	Smooth rolling on five dual-wheel casters for hard and soft floor surfaces
Lumbar support	Integrated curved lumbar zone in mesh back for lower back contact
Waterfall seat edge	Rounded front seat cushion edge to reduce leg pressure
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 workstations	Slim profile and swivel function suit daily desk-based work tasks
Home office study spaces	Compact footprint fits small home desk setups without excess bulk
Meeting and conference rooms	Neutral colorway and fixed arms support short-to-medium meeting use
Hot-desking shared workspaces	Durable casters and easy adjustment suit multi-user shared environments
Small business reception work areas	Modern light frame aesthetic complements professional reception spaces
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 task chair dimensional safety and functional requirements
EN 1335-2:2018	Applies to office chair structural strength and stability performance
EN 1335-3:2009	Applies to office chair test methods for safety verification

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 performance requirements

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 measurement methods
GB/T 10357.3-2013	Applies to office chair mechanical strength and durability testing

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office chair dimensional stability and measurement methods;
2. GB/T 10357.3-2013: Applies to office chair mechanical strength and durability testing;
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 Office Task Chair with Fixed Armrests, model MBO-MESH-650W, delivers a balanced blend of functional support and understated modern styling for professional and personal workspaces. Visually, it features a clean two-tone palette pairing a white fiber-reinforced PP engineering plastic frame, fixed armrests, and nylon five-star base with a light gray breathable woven mesh backrest and teal woven polyester fabric seat, creating a streamlined, unobtrusive silhouette that aligns with contemporary interior design schemes. Its slim, compact profile avoids bulky overhang, with overall dimensions of 650 x 640 x 1055 mm, supported by a 640 mm diameter five-star base fitted with 60mm black dual-wheel nylon casters for stable, even weight distribution. The chair’s construction prioritizes lasting durability and everyday comfort: its core structure includes a 12mm thick molded plywood seat pan topped with a 60mm thick foam cushion of 45 kg/m³ density and 45% rebound rate, upholstered in fabric rated for 50000 Martindale double rubs to resist regular wear. The backrest uses tightly woven breathable mesh to support air circulation during extended use, with an integrated curved lumbar zone built directly into the mesh frame to maintain consistent lower back contact. Supporting components include a Class 3 rated black powder-coated steel gas lift cylinder, 2.5mm thick steel butterfly tilt chassis with black finish, and casters tested for 100000 rolling cycles across hard and soft floor surfaces. Practical functions are tailored to flexible work needs: a right-side under-seat lever activates pneumatic seat height adjustment with 100mm travel, reaching a maximum seat height of 515 mm for flexible desk alignment. The chair enables 360-degree full swivel, a lockable upright position, and 20-degree rearward recline with adjustable tension control, plus three suggested lock positions at a 125-degree maximum recline angle for customized positioning. A rounded waterfall seat edge reduces pressure on the backs of legs during long seated sessions, while fixed armrests positioned 180 mm above the seat offer consistent upper body support. The chair suits a wide range of settings: open-plan office workstations, compact home office studies, meeting and conference rooms, hot-desking shared workspaces, and small business reception areas, and pairs well with desks up to 2.4 m in size. For procurement, note that each unit ships in two cartons with a total packaged gross weight of 23 kg, requires 40 minutes of assembly per set, and has a recommended static load capacity of 200 kg. A 20GP container holds 135 sets at 85% space utilization for bulk order planning. The unbranded model offers a versatile, cost-effective seating solution without branded premium markup.

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

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