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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)	690 × 710 × 1200 mm
Seat width	510 mm
Seat depth	480 mm
Maximum seat height	635 mm
Minimum seat height	440 mm
Five-star base diameter	680 mm
Caster diameter	50 mm
Backrest height	760 mm
Armrest height adjustment range	80 mm
Backrest width	490 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	19.3 kg
Maximum static load capacity	136 kg
Gas lift stroke	195 mm
Seat foam density	40 kg/m³
Seat foam thickness	80 mm
Mesh abrasion resistance	50000 cycles
Backrest frame static load	68 kg
Net product weight	19.3 kg
Gas lift vertical stroke	195 mm
Backrest mesh abrasion resistance	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	Breathable polyester elastic mesh
Back frame	PA nylon with 30% glass fiber reinforcement
Seat cushion padding	High-density molded polyurethane foam
Seat base shell	1.5mm thick steel plate
Armrests	PP structural frame with soft PU padded tops
Five-star base	2.0mm thick electroplated steel
Casters	Hard-wearing PP with polyurethane rolling surface
Lumbar support structure	Flexible reinforced PP
Headrest	Integrated curved PP frame with mesh overlay
Gas lift cylinder	Class 3 steel, SGS certified
Backrest support frame	PA nylon with 30% glass fiber reinforcement, 5mm wall thickness
Seat support chassis	2.5mm thick stamped steel plate with black powder coating

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	Pneumatic gas lift, 195mm travel, lever-operated under seat
Swivel function	360-degree full rotation around central axis
Tilt function	Backrest recline to 130 degrees with single-position lock
Armrest adjustment	Vertical height adjustment up to 80mm with fixed position lock
Lumbar support	Contoured flexible zone with 40mm vertical adjustment
Mobility	Five dual-wheel casters for smooth rolling on hard and carpet floors
Tilt tension control	Rotary knob adjusts resistance to match user weight
Headrest support	Curved integrated neck support with fixed contour for upper spine
360-degree swivel	Full unobstructed rotation around central gas lift axis, no lock limit
Lumbar support adjustment	Flexible contoured support with 40mm vertical travel, adapts to lower back curve
Floor mobility	Five dual-wheel casters, 360-degree swivel per caster, rolls on hard and carpet surfaces
Recline Angle / Lock Reference	125° with 3suggested lock positions

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 workstation	For 8-hour daily task use at standard 760 mm height office desks
Home office workspace	For remote work and computer use at residential desk setups
Conference and meeting rooms	For multi-hour seated meetings and collaborative work sessions
Executive private office	For manager and professional individual office use with ergonomic support
Computer lab and training rooms	For long-duration seated tasks requiring adjustable height and lumbar support
Open-plan office workstations	For 8-hour daily task use at standard 760mm height office desks, lumbar support reduces fatigue
Executive private offices	For manager and professional individual office use, high-back design provides upper back support
Training rooms and computer labs	For long-duration seated training and computer tasks, durable casters and sturdy base suit frequent repositioning

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 general requirements
EN 1335-2:2018	Applies to office chair structural strength and durability performance requirements
EN 1335-3:2018	Applies to office chair test methods for structural and safety verification

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 testing
ANSI/BIFMA X5.11:2015	Applies to large-user office chair load capacity verification if required
Caster rolling durability	40000 cycles

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applies to office furniture chair dimensional accuracy and stability testing
GB/T 35448-2017	Applies to ergonomic office chair general technical requirements for office use
GB/T 17657-2013	Applies to surface material physical property testing for chair upholstery

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office furniture chair dimensional accuracy and stability testing;
2. GB/T 35448-2017: Applies to ergonomic office chair general technical requirements for office use;
3. GB/T 17657-2013: Applies to surface material physical property testing for chair upholstery;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The KL-05A/B unbranded high-back mesh ergonomic swivel office chair delivers structured, user-centered support for extended seated use across professional and residential settings. It features a tall, contoured backrest upholstered in breathable polyester elastic mesh, with an integrated curved mesh headrest that follows the natural line of the upper spine and neck. The chair sits on a polished electroplated steel five-star base fitted with dual-wheel casters, with softly padded PU armrests positioned at either side of the high-density foam seat to frame the seating position without restricting movement. The matte black finish gives it a streamlined, understated aesthetic that blends with a wide range of interior design schemes.
Its construction prioritizes long-term durability and consistent comfort, with a glass-fiber reinforced PA nylon back frame, a 1.5mm thick steel seat base shell, and a 2.0mm thick electroplated steel base. The seat cushion uses molded high-density polyurethane foam for even weight distribution, while the flexible reinforced PP lumbar support structure moves to match seated posture shifts. Armrests are built on rigid PP structural frames topped with soft PU padding, and casters combine a hard-wearing PP core with a smooth polyurethane rolling surface suited to both hard flooring and carpet.
Core functional features are designed to accommodate a wide range of user preferences and body types. A pneumatic under-seat lever adjusts seat height to align with standard desk heights, while 360-degree swivel allows easy access to surrounding work surfaces without standing. The backrest reclines to a 130-degree angle with a single-position lock, and a rotary knob lets users adjust tilt tension to match their weight for a personalized feel. Armrests offer vertical height adjustment with a secure fixed-position lock, and the contoured lumbar support moves vertically to target the lower back and reduce fatigue during long periods of seated work. Five dual-wheel casters deliver smooth, quiet movement across common floor surfaces.
This chair is well suited for open-plan office workstations supporting 8-hour daily task work, home office spaces for remote work and computer use, conference rooms for multi-hour collaborative meetings, private executive offices for professional individual use, and computer labs or training rooms that demand adjustable, supportive seating for long sessions.
For procurement planning, teams should note each unit ships in two cartons, with assembly taking an average of 40 minutes per set. The compact carton dimensions support efficient container loading for large-scale orders, and the chair supports a maximum static load capacity to suit most adult users. There are no brand-specific cosmetic customizations available, making it a consistent, reliable option for bulk furnishing projects that prioritize functional ergonomic support over prominent brand labeling.

High-Back Mesh Ergonomic Swivel Office Chair with Adjustable Lumbar Support Specifications

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