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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)	590 × 640 × 1030 mm
Seat width	480 mm
Seat depth	470 mm
Seat cushion thickness	60 mm
Backrest width	450 mm
Backrest height	530 mm
Maximum seat height (floor to seat top)	520 mm
Minimum seat height (floor to seat top)	420 mm
Armrest height above seat	190 mm
Five-star base diameter	640 mm
Caster diameter	60 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	14 kg
Recommended static weight capacity	136 kg
Recommended user height range	1800 mm
Maximum recline angle	125 deg
Seam stitch pitch	8 mm
Component warranty	5 years
Caster rolling durability	40000 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	Tensioned breathable polyester mesh
Backrest frame	Glass-fiber reinforced nylon
Integrated lumbar support	Molded contoured PP pad
Seat core	Molded plywood inner pan
Seat cushion	High-density polyurethane foam
Seat upholstery	Wear-resistant polyester fabric
Armrests	Fixed closed-loop molded PP/nylon
Five-star base	Injection-molded nylon
Casters	Dual-wheel hard-floor nylon casters
Gas lift cylinder	Steel Class 3 pneumatic cylinder
Tilt mechanism	2.5mm thick stamped steel chassis
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.

360-degree swivel rotation	Full rotation enabled by central gas lift and base bearing
Pneumatic seat height adjustment	100 mm vertical adjustment travel controlled by side lever
Tilt/rocking function	Backrest recline with single-position tilt lock
Tilt tension control	User-adjustable knob modulates recline resistance
Fixed lumbar support	Built-in horizontal pad aligned to lower back curve
Fixed armrest support	190mm height above seat for stable forearm rest
Smooth caster mobility	Dual-wheel casters roll on hard floors and low-pile carpet
Knock-down assembly	Tool-assisted assembly of base, back, seat and hardware
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	Compact footprint fits standard 1200mm desk layouts for staff seating
Home office study spaces	Neutral black design and swivel function suit residential desk setups
Conference and meeting rooms	Mid-back profile supports upright seated posture during short meetings
Call center and shared desk environments	Durable mesh and rolling casters suit frequent multi-user access
Height-adjustable desk compatibility	520mm maximum seat height works with standard and standing desk heights
Hard floor and low-pile carpet spaces	Standard nylon casters roll smoothly without requiring floor mats
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

Office furniture seating safety	EN 1335:2020
Office chair strength stability	EN 1335:2018
Office chair test methods	EN 1335:2018

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

Office chair general purpose	ANSI/BIFMA X2017
Caster durability requirement	ANSI/BIFMA X5.1 Test 12
Gas lift performance	ANSI/BIFMA X5.1 Test 8

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

Office chair strength and durability	GB/T 10357.2
Office chair safety requirement	GB 28007
Upholstery fabric performance	GB/T 21655.1

Standardized tender description text

This product must meet the following technical requirements:
1. Office chair strength and durability: GB/T 10357.2;
2. Office chair safety requirement: GB 28007;
3. Upholstery fabric performance: GB/T 21655.1;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Mid-Back Mesh Office Task Chair with Fixed Armrests (model MB-MESH-TASK-590) is an unbranded professional seating solution with a streamlined, matte black mid-back profile that balances support and a non-intrusive visual footprint. Its clean, functional layout features a contoured backrest positioned to align with natural seated posture, paired with fixed closed-loop armrests that sit 190mm above the seat for stable forearm support, all anchored to a sleek five-star caster base that maintains a compact, space-efficient profile suitable for close desk placement.
The chair is built for long-term daily use with a tiered material specification: the backrest uses tensioned breathable polyester mesh stretched over a glass-fiber reinforced nylon frame, fitted with a molded contoured polypropylene lumbar pad shaped to cradle the lower back. The seat uses a molded plywood inner pan topped with 60mm thick high-density polyurethane foam, upholstered in wear-resistant polyester fabric. Armrests are constructed from molded polypropylene and nylon blend, while the five-star base is injection-molded nylon, fitted with dual-wheel hard-floor nylon casters. The 14kg chair supports a recommended static weight capacity of 136kg, backed by a 5-year component warranty.
Core functional features include full 360-degree swivel enabled by the central gas lift and base bearing, with pneumatic seat height adjustment offering 100mm of vertical travel controlled via a side lever, reaching a maximum seat height of 520mm from the floor. Users can activate a tilt/rocking function with single-position tilt lock, with a user-adjustable knob to modulate tilt tension to individual preference, supporting a maximum 125-degree recline angle. The dual-wheel casters roll smoothly across hard floors and low-pile carpet without requiring additional floor mats, with caster rolling durability rated for 40,000 cycles.
This chair is suited for a wide range of commercial and residential work settings: its compact overall dimensions of 590 x 640 x 1030 mm fit standard 1200mm open-plan office workstation layouts, while its neutral black finish works seamlessly for home office study spaces. Its mid-back profile supports upright posture for short meetings, making it ideal for conference rooms, and its durable mesh and smooth mobility suit high-traffic call centers and shared desk environments. The 520mm maximum seat height also ensures compatibility with both standard fixed desks and height-adjustable standing desk setups.
For procurement planning, note that each unit ships across 2 cartons, with a packaged gross weight of 23kg per set and total carton volume of 0.26 m³, allowing 135 sets to be loaded in a 20GP container at 85% space utilization. On-site assembly requires an 40 minutes per set. The chair is designed to accommodate users up to 1800mm in height, with standard nylon casters suited exclusively for hard floors and low-pile carpet installations, so alternate caster specifications may be required for high-pile carpet spaces.

Mid-Back Mesh Office Task Chair with Fixed Armrests Specifications

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