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Black fabric task chair without arms, five-star nylon base, dual-wheel casters, adjustable back depth and seat height

BOSS Office Products

BOSS Office Products B315-BK Black Task Chair office furniture

SKU CH-GFAK-470VZ MPN B315-BK

A black task chair with adjustable seat height, back depth, built-in lumbar support, a waterfall-edge seat, nylon base and dual-wheel casters for 275.00 lbs capacity

  • TypeTask Chair
  • ColorBlack
  • Sizes/Dimensions35.00" x 25.00" x 25.00" (Minimum Overall) 40.00" x 25.00" x
  • Quantity1 each
  • SpecificationsMechanism Type: Height Adjustable Weight Capacity: 275.00 lb

Color Black

  • Thick padded seat with waterfall edge reduces leg pressure
  • Adjustable seat height and back depth for personalised posture
  • Built-in lumbar support promotes healthy spine alignment
  • Five-star nylon base with hooded dual-wheel casters ensures stable mobility
  • Supports users up to 275.00 lbs for durable daily use

Black task chair for desk work

The BOSS B315-BK is a black fabric task chair built for office or home-desk use. It supports users up to 275.00 lbs and adjusts in seat height from 18.50" to 23.50" via a pneumatic gas lift. The back depth also adjusts so the 14.50" high by 17.25" wide backrest can be positioned for individual posture needs. Seat width and depth stay fixed at 17.50" by 16.50".

Tweed upholstery with nylon base and casters

The seat and back are covered in black tweed fabric over thick padding with a waterfall front edge. A five-star nylon base measuring 25.00" across carries hooded dual-wheel nylon casters of 2.00" diameter. The chair rolls smoothly on hard floors or low-pile carpet and swivels freely. Overall height ranges from 35.00" to 40.00" while width and depth remain 25.00" at both minimum and maximum settings.

Armless design for close-in workstations

This model has no armrests, so it suits users who need to slide fully under a desk or prefer unrestricted shoulder movement. It replaces a fixed-height or non-adjustable chair when lumbar support and seat-height tuning are required. The jump is worth it for anyone who sits for long periods and needs adjustable back depth plus a waterfall seat edge to reduce leg pressure. Buyers who want arm support or a mesh back should look elsewhere.

Highlights

  • Thick padded seat with waterfall edge reduces leg pressure
  • Adjustable seat height and back depth for personalised posture
  • Built-in lumbar support promotes healthy spine alignment
  • Five-star nylon base with hooded dual-wheel casters ensures stable mobility
  • Supports users up to 275.00 lbs for durable daily use

Specifications

BrandBoss Office Supplies
ModelB315-BK
TypeTask Chair
ColorBlack
Sizes/Dimensions35.00" x 25.00" x 25.00" (Minimum Overall)
40.00" x 25.00" x 25.00" (Maximun Overall)
18.50" x 17.50" x 16.50" (Minimum Seat H x W x D)
23.50" x 17.50" x 16.50" (Maximun Seat H x W x D)
14.50" x 17.25" (Back H x W)
Quantity1 each
SpecificationsMechanism Type: Height Adjustable
Weight Capacity: 275.00 lbs.
Primary Material: Tweed
Chair Base: Nylon 25.00"
Casters: Dual Wheel Nylon 2.00"
Shipping weight10.43 kg
Package size610 × 584 × 279 mm

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Questions about this item

What seat-height range does the pneumatic gas lift on the B315-BK provide?

The gas lift adjusts the seat from 18.50 inches up to 23.50 inches so you can match desk height precisely.

How much floor space does the 25.00-inch nylon base and 2.00-inch casters need to roll freely?

The five-star base spans 25.00 inches and the hooded dual-wheel casters are 2.00 inches each; allow a few extra inches beyond the base for clear movement.

Which levers set the seat height and back depth on the B315-BK, and which step do users often miss?

Pull the paddle lever for seat height, turn the rear knob for back depth; the common miss is not locking the back-depth knob after finding the right position.

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