Black Upholstered Mid-Back Swivel Executive Office Chair (model OFC-MB-BLK-700-660) is listed under Executive Boss Chair. Dimensions: 700 × 660 × 1000 mm. Materials: Black upholstery with visible stitched edge seams; exact leather, bonded leather, or PU composition requires supplier BOM confirmation.. Load capacity: 780 kg. Product Features: black,upholstery,mid-back,design,fixed,armrests,five-star,caster,base,swivel,executive,chair. This page consolidates 6 groups of specifications and GB / EN / ANSI/BIFMA standard references, with metric and imperial units. 1 supplier(s) are listed and you can request a quote online.
| Brand | FENGGUAN | Model | OFC-MB-BLK-700-660 |
| Overall dimensions (W × D × H) | 700 × 660 × 1000 mm | Backrest height above seat | 480 mm |
| Finished Seat Cushion Thickness | 90 mm | Backrest Padding Thickness | 70 mm |
| Lumbar Support Zone Height | 240 mm | Clear Width Between Armrests | 540 mm |
| Suggested user body weight capacity | 120 kg | Static seat proof load for procurement verification | 780 kg |
| Backrest static verification load | 150 kg | Gas-lift class target | Class 4 |
| Caster rolling durability target | 100,000 cycles | Seat-slide cyclic durability target | 100,000 cycles |
| Chair net weight reference | 15 kg | Recommended daily user duration | 8 hours |
| Number of users intended | 1 person | Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
| Seat and back facing material | Black upholstery with visible stitched edge seams; exact leather, bonded leather, or PU composition requires supplier BOM confirmation. | Seat cushion structure | Molded padded cushion over an internal load-bearing seat shell; foam grade and density require supplier BOM confirmation. |
| Backrest structure | Contoured padded mid-back panel with horizontal lumbar seam and side bolster shaping; support board type is not visible. | Armrests | Fixed curved arms with black padded contact pads and polished chrome or chrome-finished support loops. |
| Center column and base | Polished chrome-plated gas-lift column and five-star metal base with five outward support legs. | Casters | Five black twin-wheel swivel casters, one mounted at each five-star base endpoint. |
| Seat height adjustment | Pneumatic lever adjusts seat height from a 450 mm measured shown position; complete travel and upper height are not printed. | Swivel function | 360-degree swivel enabled by the central gas-lift and caster base shown in the product structure. |
| Mobility | Five twin-wheel casters provide rolling movement on smooth office floors; braking function is not visible. | Back movement | Under-seat tilt lever and tension knob indicate recline with tension adjustment; exact angle and lock positions require supplier data. |
| 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 |
| Executive and private office use | Black mid-back chair with fixed arms and chrome base suits manager desks, executive workstations, and formal meeting offices. | Open-plan workstation use | Swivel caster base and height lever support daily computer work, short meetings, and movement between adjacent desk areas. |
| Time | Field | Original Value | Corrected Value | Note / Status |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
Data source: Structured from factory data; final measured values prevail.
| Overall dimensions (W × D × H) | 700 × 660 × 1000 mm | |
|---|---|---|
| Backrest height above seat | 480 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Backrest Padding Thickness | 70 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
Data source: Product performance data; verify exact test conditions before procurement.
| Suggested user body weight capacity | 120 kg | |
|---|---|---|
| Static seat proof load for procurement verification | 780 kg | |
| Backrest static verification load | 150 kg | |
| Gas-lift class target | Class 4 | |
| Caster rolling durability target | 100,000 cycles | |
| Seat-slide cyclic durability target | 100,000 cycles | |
| Chair net weight reference | 15 kg | |
| Recommended daily user duration | 8 hours | |
| Number of users intended | 1 person | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
Data source: Subject to the factory material list and inspection report.
| Seat and back facing material | Black upholstery with visible stitched edge seams; exact leather, bonded leather, or PU composition requires supplier BOM confirmation. | |
|---|---|---|
| Seat cushion structure | Molded padded cushion over an internal load-bearing seat shell; foam grade and density require supplier BOM confirmation. | |
| Backrest structure | Contoured padded mid-back panel with horizontal lumbar seam and side bolster shaping; support board type is not visible. | |
| Armrests | Fixed curved arms with black padded contact pads and polished chrome or chrome-finished support loops. | |
| Center column and base | Polished chrome-plated gas-lift column and five-star metal base with five outward support legs. | |
| Casters | Five black twin-wheel swivel casters, one mounted at each five-star base endpoint. |
Adjustment / rotation / tilt / mobility / storage features
Data source: Functional configuration; the supplier specification prevails.
| Seat height adjustment | Pneumatic lever adjusts seat height from a 450 mm measured shown position; complete travel and upper height are not printed. | |
|---|---|---|
| Swivel function | 360-degree swivel enabled by the central gas-lift and caster base shown in the product structure. | |
| Mobility | Five twin-wheel casters provide rolling movement on smooth office floors; braking function is not visible. | |
| Back movement | Under-seat tilt lever and tension knob indicate recline with tension adjustment; exact angle and lock positions require supplier data. |
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 |
Recommended spaces / users / usage modes
Data source: Recommended applications based on product form and category.
| Executive and private office use | Black mid-back chair with fixed arms and chrome base suits manager desks, executive workstations, and formal meeting offices. | |
|---|---|---|
| Open-plan workstation use | Swivel caster base and height lever support daily computer work, short meetings, and movement between adjacent desk areas. |
EU Market Access Requirements* EN Standards
| EN 1335-1 office furniture dimensions | Use as the dimensional-safety reference for seated task-chair clearances and adjustment ranges. | |
|---|---|---|
| EN 1335-2 office chair safety | Use as the structural safety acceptance reference for office seating procurement. | |
| EN 1335-3 office chair test methods | Use for laboratory verification of strength, durability, and stability before bulk acceptance. |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1 office chairs | Use for strength, durability, stability, back, arm, seat, and caster acceptance testing; no certification is shown. | |
|---|---|---|
| BIFMA e3 level reference | Use only if supplier provides measured material, chemical, indoor-air, and recyclability documentation. |
Standards applicable to China-market projects
| GB/T 10357.3 furniture mechanical test | Use as a Chinese procurement test reference for seat and back strength of a single office chair. | |
|---|---|---|
| GB/T 10357.2 furniture casters test | Use as a Chinese procurement test reference for caster durability and stability where casters are supplied. | |
| GB/T 3324 general furniture quality reference | Use for finished-furniture inspection terminology, dimensional tolerances, and coating quality checks. |
This product must meet the following technical requirements: 1. GB/T 10357.3 furniture mechanical test: Use as a Chinese procurement test reference for seat and back strength of a single office chair.; 2. GB/T 10357.2 furniture casters test: Use as a Chinese procurement test reference for caster durability and stability where casters are supplied.; 3. GB/T 3324 general furniture quality reference: Use for finished-furniture inspection terminology, dimensional tolerances, and coating quality checks.; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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