Name: High-Back Ergonomic Mesh Office Chair with Adjustable Headrest and Lumbar Support
Brand: Bolongkeli Smart Furniture
SKU: S62TLJ

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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)	680 × 670 × 1370 mm
Seat height range maximum	550 mm
Seat width	525 mm
Seat depth	500 mm
Backrest height	760 mm
Headrest height adjustment travel	135 mm
Five-star base diameter	350 mm
Caster diameter	60 mm
Armrest height adjustment travel	50 mm
Armrest inner width	500 mm
Seat cushion thickness	110 mm
Backrest width	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	18 kg
Recommended static load capacity	181 kg
Seat foam density	60 kg/m³
Foam rebound rate	60%
Mesh abrasion resistance	100000 cycles
Recommended user height range maximum	190 cm
Recommended daily usage duration	8 hours
Seam stitch pitch	8 mm
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%
Back Foam Density Reference	38 kg/m³

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 mesh
Seat cushion core	High-resilience molded polyurethane foam
Seat surface upholstery	Stretchy black woven fabric
Internal seat substrate	14 mm thick plywood
Back frame	Glass-fiber reinforced nylon
Armrest pads	Soft polyurethane padding on nylon supports
Gas lift cylinder	Carbon steel with black powder coat
Five-star base	Reinforced black nylon
Caster wheels	Polyurethane tread with nylon hub
Chassis mechanism	2.5 mm thick stamped steel
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness	14 mm bent plywood/composite reinforced frame

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 with 130 mm stroke, adjusts between 550 mm seat height
Swivel function	360° full rotation around central axis
Backrest recline	Tilt range up to 135° from upright, with tension adjustment knob under seat
Recline lock	Lockable at upright and multiple recline positions
Headrest adjustment	135 mm height adjustment plus 30° angle rotation
Lumbar support	Height-adjustable curved lumbar pad in lower back zone
Armrest adjustment	50 mm vertical height adjustment to match desk height
Mobility	Smooth rolling on hard floors and low-pile carpet via 60 mm dual-wheel casters
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.

Private office workspace	Provides 8-hour ergonomic support for focused work at standard height desks
Open plan workstation	Neutral black design fits standard office layouts with smooth rolling mobility
Home office setup	Adjustable features accommodate shared use across multiple family members
Meeting and conference rooms	Swivel and recline functions support long collaborative sessions
Height-adjustable desk compatibility	550 mm maximum seat height pairs with sit-stand desk elevation ranges
Hot-desking environments	Quick adjustment controls allow fast reconfiguration for different users
Carpeted and hard floor spaces	PU casters roll smoothly without damaging floor surfaces
Recommended Matching Desk Size	2.4 m executive desk

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	Applies to office chair dimensional safety and functional performance requirements for commercial use
EN 1335-2:2018	Applies to mechanical strength, stability and durability testing for office work chairs
EN 1022:2018	Applies to stability testing for domestic and contract seating products

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, durability and structural performance standards
BIFMA X5.1-2017 Clause 7	Applies to caster rolling load and cycle durability requirements

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applies to office furniture seating dimensional accuracy and stability testing for procurement acceptance
GB/T 10357.3-2013	Applies to mechanical strength and durability testing for office chair seats and backrests
GB 28007-2011	Applies to caster wheel strength and rolling durability requirements for office chairs

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office furniture seating dimensional accuracy and stability testing for procurement acceptance;
2. GB/T 10357.3-2013: Applies to mechanical strength and durability testing for office chair seats and backrests;
3. GB 28007-2011: Applies to caster wheel strength and rolling durability requirements for office chairs;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The High-Back Ergonomic Mesh Office Chair with Adjustable Headrest and Lumbar Support from Bolongkeli Smart Furniture, model ERG-MESH-HB-001, presents a streamlined, professional silhouette finished entirely in matte black to complement diverse interior schemes. Its high-back profile extends to a contoured, adjustable headrest, paired with a supportive curved lumbar pad positioned in the lower back zone. The chair features a five-star caster base, with centrally aligned seat and backrest components that enable balanced, unobstructed movement around the central axis. Constructed for long-term durability, the chair pairs a breathable polyester mesh backrest framed in glass-fiber reinforced nylon with a cushioned seat built on a 14 mm thick plywood substrate. The seat core uses high-resilience molded polyurethane foam, upholstered in stretchy black woven fabric, with armrests finished in soft polyurethane padding mounted on nylon supports. The gas lift cylinder is made of powder-coated carbon steel, the five-star base is formed from reinforced black nylon, and caster wheels feature a polyurethane tread on nylon hubs for smooth, low-impact movement across flooring. The chair delivers targeted ergonomic adjustment to suit varied user needs. A pneumatic gas lift enables seat height adjustment to a maximum height of 550 mm, with 360-degree swivel functionality for easy access to surrounding work surfaces. The backrest reclines up to 135 degrees from its upright position, with an under-seat tension adjustment knob and lock functionality that secures the backrest in the upright position and multiple intermediate recline angles. The headrest offers 135 mm of vertical travel alongside 30 degrees of angle rotation, the lumbar pad adjusts vertically to align with individual user back curves, and armrests adjust 50 mm vertically to match desk heights. The chair supports up to 8 hours of daily use, accommodates users up to 190 cm tall, and holds a recommended static load capacity of 181 kg. This model is suited for a wide range of commercial and residential spaces, including private office workspaces for focused individual work, open-plan workstations where its neutral finish blends seamlessly with standard layouts, home office setups where adjustable features support shared use across household members, conference rooms where swivel and recline functions support long collaborative sessions, hot-desking environments where quick adjustment controls enable fast reconfiguration between users, and spaces with height-adjustable sit-stand desks, where its maximum seat height pairs well with variable desk elevations. Procurement teams should note that each unit ships in two cartons, with a reference assembly time of 40 minutes per set. The packaged product has a gross weight of 23 kg per set, and 135 sets can be loaded into a 20GP container at 85% space utilization, supporting efficient bulk ordering for large office fit-outs.

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

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