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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 × 650 × 1160 mm
Seat cushion width	520 mm
Seat cushion depth	510 mm
Maximum seat height	530 mm
Minimum seat height	430 mm
5-star base diameter	700 mm
Upper back pad dimensions	190 x 380 mm per pad
Lumbar support pad dimensions	370 x 185 mm
Armrest pad dimensions	250 x 100 mm per pad
Armrest height above seat	240 mm
Caster diameter	60 mm
Backrest total height	510 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	20 kg
Maximum recommended user weight	159 kg
Base static load capacity	500 kg
Maximum recline angle	135 degrees
Gas lift stroke length	100 mm
Caster rolling durability	100000 cycles
Seat cushion foam density	45 kg/m³
Foam rebound rate	55%
Seam stitch pitch	8 stitches per 30 mm
Upholstery abrasion resistance	30000 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.

Seat upholstery	Light gray woven polyester fabric, 0.8mm thickness
Seat cushion padding	45kg/m³ high-resilience molded polyurethane foam, 60mm thickness
Backrest pads	Same woven polyester fabric over 40mm thick molded foam
Structural frame	Glass-fiber reinforced light gray polypropylene, 4mm wall thickness
Armrests	Integral glass-fiber reinforced PP with matte light gray finish, fixed T-shape
Gas lift cylinder	Class 3 black-coated steel pneumatic cylinder, 50mm outer diameter
5-star base	Matte light gray nylon composite, 3mm leg wall thickness
Casters	Dual-wheel PU tread with nylon hub, black housing with light gray accent
Seat pan inner support	1.5mm thick stamped steel plate under cushion
Tilt mechanism	2.5mm thick steel chassis with tension adjustment
Structural back frame	Glass-fiber reinforced light gray polypropylene, 4 mm wall thickness
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.

Height adjustment	Pneumatic gas lift adjusts seat 100mm via side lever, locks at any height
Swivel function	360-degree full rotation around central gas lift column
Recline function	135-degree backward tilt with adjustable tension control, single-position lock
Lumbar support	Fixed contoured lumbar pad positioned to support natural lower back curve
Mobility	Five dual-wheel casters enable smooth rolling on hard floors and low-pile carpet
Back support	Dual independent upper back pads conform to shoulder blade movement
Arm support	Fixed height T-shaped armrests provide stable forearm support during desk work
Mobility function	Five dual-wheel casters roll smoothly on hard floors and low-pile carpet
Tilt tension control	Rotating knob adjusts recline resistance to match user body weight
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.

Home office workspace	Sized for compact home desks, light gray finish matches modern neutral decor
Open office workstations	Commercial-grade structure suitable for daily 8-hour employee use
Conference meeting rooms	Neutral appearance and swivel function suit collaborative meeting spaces
Training room seating	Lightweight caster base enables easy repositioning between sessions
Student study desks	Adjustable height fits teen and adult users at standard study desks
Co-working shared spaces	Durable upholstery and universal design suit rotating shared use
Training room facilities	Lightweight caster base allows quick repositioning between training sessions
Student study areas	Adjustable height fits teen and adult users at standard height study desks

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	Applies to office work chair dimensional and safety performance requirements
EN 1335-2:2018	Applies to office chair structural strength and durability test methods
EN 1728:2014	Applies to seating furniture mechanical strength and stability 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 safety and durability 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 strength testing
GB/T 10357.3-2013	Applies to mechanical performance test methods for seating furniture
GB 28007-2011	Applies to general safety requirements for children's and adult office seating

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office chair dimensional stability and strength testing;
2. GB/T 10357.3-2013: Applies to mechanical performance test methods for seating furniture;
3. GB 28007-2011: Applies to general safety requirements for children's and adult office seating;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Light Gray Dual-Split Back Ergonomic Office Task Chair, model OFCH-DB-GRY-01, delivers a refined, functional seating solution for a wide range of work and study environments with its understated modern profile and purpose-driven design. Its visual layout balances clean, uniform light gray finishes across the upholstery, frame, armrests, and five-star base, accented by black caster housings with subtle light gray detailing for a cohesive, contemporary look. The signature dual-split independent upper back pads and contoured fixed lumbar pad create a structured, supportive silhouette without bulky overdesign, paired with fixed T-shaped armrests positioned for stable forearm alignment during desk-based tasks.
Built for long-term use, the chair features light gray 0.8mm thick woven polyester upholstery over high-resilience molded polyurethane foam; seat cushions use 60mm thick 45kg/m³ foam, while backrest pads use 40mm thick molded foam for balanced softness and support. The structural frame is constructed from glass-fiber reinforced light gray polypropylene with a 4mm wall thickness, supported by a 1.5mm stamped steel inner seat pan, a Class 3 black-coated steel pneumatic gas lift, and a matte light gray nylon composite five-star base with 3mm leg wall thickness. Dual-wheel casters combine soft PU treads with nylon hubs for smooth, low-friction movement.
Core functional features support ergonomic comfort and flexible use: pneumatic height adjustment delivers a 100mm seat height range controlled by a side lever that locks at any preferred height, 360-degree swivel enables easy access to surrounding work surfaces, and a 135-degree recline includes adjustable tension control with a single-position lock. The fixed contoured lumbar pad aligns with the natural lower back curve, while the split upper back pads move independently to accommodate natural shoulder blade movement during task shifts. The casters roll smoothly across hard floors and low-pile carpet for unobstructed repositioning.
This chair fits seamlessly across both residential and commercial settings: it is sized for compact home office desks, with a neutral light gray finish that complements modern neutral residential decor; its commercial-grade construction supports daily 8-hour employee use in open office workstations, while its clean aesthetic and swivel function suit collaborative conference rooms. The easy-roll base allows quick reconfiguration in training rooms, its adjustable height works for teen and adult users at student study desks, and its durable upholstery and universal design hold up to rotating use in co-working shared spaces.
For procurement planning, the chair ships as one set across two cartons, with an 40-minute assembly time per unit. It holds a maximum recommended user weight of 159kg, with a base static load capacity of 500kg and caster rolling durability rated for 100,000 cycles, supporting long-term high-frequency use.

Light Gray Dual-Split Back Ergonomic Office Task Chair Specifications

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