Product supplierMid-Back Dual-Lumbar Mesh Ergonomic Office Task Chair, Breathable woven polyester mesh, black
Contact the supplier for production scheduling and quotation.
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) | 640 × 660 × 1120 mm | |
|---|---|---|
| Seat width | 500 mm | |
| Seat depth | 480 mm | |
| Seat height range | 520mm | |
| Backrest total height | 580 mm | |
| Armrest height above seat | 90mm | |
| Armrest pad dimensions | 100 x 250 mm | |
| Five-star base diameter | 620 mm | |
| Caster diameter | 50 mm | |
| Finished Seat Cushion Thickness | 90mm | |
| Backrest Padding Thickness | 70mm | |
| Lumbar Support Zone Height | 240mm | |
| Clear Width Between Armrests | 540mm |
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 range | 16kg | |
|---|---|---|
| Maximum recommended static load | 120 kg | |
| Seat foam density | 45 kg/m³ | |
| Back mesh tensile strength | ≥300 N/5cm | |
| Seat cushion thickness | 50 mm | |
| Seam stitch pitch | 10 stitches per inch | |
| Recommended user weight range | 110kg | |
| Maximum recommended static occupant load | 120kg | |
| Seat molded foam density | 45±5 kg/m³ | |
| Seat fabric abrasion resistance | ≥30,000 Martindale 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 surface | Breathable woven polyester mesh, black | |
|---|---|---|
| Seat surface | Woven black fabric over high-resilience foam | |
| Back frame | Injection-molded black nylon (PA6) | |
| Armrests | Injection-molded black polypropylene with flat padded top | |
| Five-star base | Glass-fiber reinforced injection-molded black nylon | |
| Gas lift cylinder | Chrome-plated steel, Class 3 | |
| Height adjustment mechanism | Black steel and nylon synchro-tilt chassis | |
| Casters | Black polyurethane twin-wheel casters, nylon stem | |
| Upper backrest surface | Breathable woven black polyester mesh, stretched taut over nylon frame | |
| Lower backrest surface | Breathable woven black polyester mesh, stretched over contoured nylon support frame | |
| Seat upholstery | Woven black polyester fabric, laminated over high-resilience molded polyurethane foam | |
| Internal seat support frame | 1.8mm thick stamped steel plate, powder-coated black |
PRODUCT MODULE 04 / 06
Functions & Adjustment
Adjustment / rotation / tilt / mobility / storage features
Data source: Functional configuration; the supplier specification prevails.
| Seat height adjustment | Pneumatic adjustment via under-seat lever, 100mm total travel between 520mm seat height | |
|---|---|---|
| Backrest tilt function | Synchro tilt with 3-position tilt lock, 12° maximum backward tilt angle | |
| Armrest adjustment | Height-adjustable armrests with 20mm vertical travel, fixed horizontal position | |
| Dual lumbar support | Two integrated curved mesh support zones positioned for lower and mid-lumbar spine contact | |
| Caster mobility | 5 dual-wheel swivel casters enabling omnidirectional rolling on hard floors and low-pile carpet | |
| Backrest synchro tilt | Weight-activated synchro tilt mechanism, 12° maximum backward tilt angle, with 3-position lock (upright, mid-tilt, full recline) and adjustable tilt tension knob | |
| Dual-zone lumbar support | Two fixed-position curved contoured mesh support zones, positioned to contact L5-S1 lower lumbar and L3-L4 mid-lumbar spine during upright sitting | |
| Omnidirectional mobility | 5 brake-free twin-wheel swivel casters, enabling 360° rolling movement on hard floors and ≤6mm pile carpet | |
| Waterfall seat pressure relief | Contoured front seat edge with 20mm downward slope, reducing contact pressure on the posterior thigh to improve lower limb circulation | |
| Recline Angle / Lock Reference | 125° with 3 suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120kg | |
| 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.
| Number of packages | 1 carton | |
|---|---|---|
| Single carton dimensions | 650 x 620 x 540 mm | |
| Gross weight per carton | 19kg | |
| Carton cubic volume (CBM) | 0.218 CBM | |
| Estimated assembly time | 15minutes per unit | |
| 20ft GP container loading quantity | 140 units | |
| 40ft HQ container loading quantity | 330 units | |
| Single outer carton dimensions | 650 x 320 x 540mm | |
| Carton cubic volume | 0.112 CBM | |
| Estimated on-site assembly time | 15minutes per unit |
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 | Suitable for 8-hour daily task use at standard 760mm height office desks, mesh back provides ventilation for warm office environments | |
|---|---|---|
| Home office workspaces | Compact footprint fits small home work areas, rolling casters allow easy repositioning between work and non-work activities | |
| Conference and meeting rooms | Stackless rolling design allows flexible arrangement around conference tables, neutral black finish matches most commercial interior styles | |
| Hot-desking shared workspaces | Durable construction and easy adjustment supports shared use by multiple users of varying heights, with no complex custom adjustment settings | |
| Reception and visitor areas | Ergonomic support for short to medium duration visitor seating, professional appearance suits client-facing office zones | |
| Shared hot-desking workspaces | Simple lever-operated height and tilt controls require no custom user programming, durable construction supports rotating use by 185cm tall users without readjustment delays | |
| Reception and administrative areas | Mid-back ergonomic support provides comfortable seating for administrative staff and short-stay visitors, formal unbranded design suits client-facing front-of-house zones | |
| Recommended Matching Desk Size | 2.4m executive desk |
STANDARD S1
EU Market Entry Requirements * EN Standards
EU Market Access Requirements* EN Standards
| EN 1335-1:2020 | Applicable office work chair dimensional, safety and strength requirement, used as acceptance reference for European market shipments | |
|---|---|---|
| EN 1335-2:2018 | Applicable safety performance test standard for office seating, covering stability, load, and durability test methods for contract use | |
| EN 1022:2018 | Applicable furniture seating stability standard, used to verify tip-over resistance when tilting back or reaching sideways |
STANDARD S2
North America Purchasing & Inspection Reference * ANSI/BIFMA Standards
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 (Tests 5, 8, 13, 17) | Recommended North American office chair standard, specifying minimum requirements for caster durability, base static load, backrest cyclic fatigue, and gas lift safety, referenced for 8-hour daily commercial use |
|---|
STANDARD S3
Standards Applicable to China-Market Projects * GB Standards
Standards applicable to China-market projects
| GB/T 3326-2016 | Applicable dimensional tolerance and stability requirement for office seating, used as acceptance reference for measured dimensions and tip-over resistance | |
|---|---|---|
| GB/T 10357.3-2013 | Applicable mechanical performance test standard for office chairs, covering seat static load, backrest static load, and fatigue durability requirements for commercial use | |
| GB 28007-2011 | Applicable safety standard for children? No, correction: GB/T 27742 Office chair gas lift safety requirement, applicable for verifying cylinder burst resistance and structural safety | |
| GB/T 27742-2011 | Recommended safety standard for office chair gas lift cylinders, covering burst pressure, axial load, and cyclic durability requirements for pneumatic height adjustment components | |
| GB 18584-2001 | Recommended indoor furniture hazardous substance limit standard, covering formaldehyde and heavy metal content limits for upholstered seating components |
Standardized tender description text
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applicable dimensional tolerance and stability requirement for office seating, used as acceptance reference for measured dimensions and tip-over resistance; 2. GB/T 10357.3-2013: Applicable mechanical performance test standard for office chairs, covering seat static load, backrest static load, and fatigue durability requirements for commercial use; 3. GB 28007-2011: Applicable safety standard for children? No, correction: GB/T 27742 Office chair gas lift safety requirement, applicable for verifying cylinder burst resistance and structural safety; 4. GB/T 27742-2011: Recommended safety standard for office chair gas lift cylinders, covering burst pressure, axial load, and cyclic durability requirements for pneumatic height adjustment components; 5. GB 18584-2001: Recommended indoor furniture hazardous substance limit standard, covering formaldehyde and heavy metal content limits for upholstered seating components; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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