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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)	625 × 640 × 1055 mm
Seat width	490 mm
Seat depth	445 mm
Maximum seat height	505 mm
Minimum seat height	405 mm
Backrest height	560 mm
Backrest width	475 mm
Armrest height above seat	190 mm
Five-star base diameter	640 mm
Total minimum chair height	955 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	15 kg
Recommended static load capacity	120 kg
Seat cushion foam density	45 kg/m³
Cushion foam thickness	70 mm
Backrest mesh abrasion resistance	50000 cycles
Caster rolling durability	100000 cycles
Recommended user height range	180 cm
Seam stitch pitch	8 mm
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%
Back Foam Density Reference	38 kg/m³

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 polyester tension mesh
Backrest support frame	Reinforced black nylon/PA
Seat cushion core	High-density molded polyurethane foam
Seat upholstery	Woven polyester fabric
Armrests	Fixed T-shaped black nylon
Five-star base	Reinforced injection-molded nylon
Gas lift cylinder	Steel Class 3 pneumatic cylinder
Casters	60 mm diameter polyurethane tread casters
Seat support pan	12 mm thick plywood understructure
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness	14 mm bent plywood/composite reinforced frame
Tilt Mechanism Plate Thickness	2.5 mm cold-rolled steel

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	100 mm vertical stroke via pneumatic gas lift
Swivel function	360-degree full rotation around central axis
Back recline	125-degree maximum tilt angle with tension control
Mobility	Smooth rolling on hard floors and low-pile carpet
Lumbar support	Contoured fixed lumbar support zone on lower back
Tilt lock	Single-position upright lock for focused work
Arm support	Fixed height armrests for consistent forearm support
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 workstation use	Suitable for daily 8-hour staff desk work with basic ergonomic support
Home office setup	Compact footprint fits standard home desk spaces for remote work
Meeting room seating	Consistent design for conference and collaborative meeting spaces
Training room deployment	Durable swivel design for short to medium duration training sessions
Reception and admin areas	Professional black finish matches standard commercial office decor
User profile	Suitable for users up to 120kg and 180cm tall for daily office tasks
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 work chair dimensional safety and performance requirements
EN 1335-2:2018	Applies to office chair structural strength and durability testing
EN 1335-3:2009	Applies to office chair stability and static load testing

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 durability, strength and stability standards

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applies to office furniture seating dimensional accuracy and stability testing
GB/T 38609-2020	Applies to ergonomic design requirements for office seating products
GB 18584-2001	Applies to indoor furniture formaldehyde emission limit testing

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office furniture seating dimensional accuracy and stability testing;
2. GB/T 38609-2020: Applies to ergonomic design requirements for office seating products;
3. GB 18584-2001: Applies to indoor furniture formaldehyde emission limit 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 Chair with Fixed T-Armrests, model MBO-MESH-625, delivers functional, professional seating for a wide range of work environments, blending understated commercial design with targeted ergonomic support. Its streamlined silhouette features a contoured mid-height backrest paired with a generously proportioned seat, supported by a classic five-star base that creates a stable, compact footprint suited to tight workspaces. Fixed T-shaped armrests sit at a consistent height above the seat, maintaining a clean, uniform look that aligns with standard office decor palettes, finished in a neutral professional black. Constructed for regular daily use, the chair pairs a breathable polyester tension mesh backrest mounted to a reinforced black nylon frame with a seat built around a high-density molded polyurethane foam core, upholstered in woven polyester fabric and supported by a sturdy plywood understructure. The reinforced injection-molded nylon five-star base is fitted with polyurethane tread casters, paired with a Class 3 steel pneumatic gas lift to deliver reliable height adjustment. Fixed contoured lumbar support built into the lower backrest reduces strain during seated work, while the mesh material promotes air circulation to prevent heat buildup during long shifts. Core functional features support flexible work patterns: the seat adjusts vertically to accommodate different desk heights, with full 360-degree swivel rotation for easy access to surrounding work surfaces. The backrest reclines to a maximum tilt angle with adjustable tension control, and includes a single-position upright lock for focused task work. The casters roll smoothly across hard floors and low-pile carpet, while fixed armrests provide steady forearm support during typing or writing tasks. This chair is well suited for open office workstations supporting daily staff desk work, compact home office setups for remote work, consistent seating for meeting and conference rooms, flexible training room deployments, and reception or administrative areas where a cohesive professional aesthetic is required. It is designed to support users up to 180cm tall and 120kg for routine office tasks. For procurement planning, note each unit ships in two cartons, with straightforward on-site assembly, and consistent bulk loading capacity for large-scale furnishing projects. The durable mesh and caster construction is engineered to hold up to regular repeated use across high-traffic shared spaces.

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

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