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Black armless task chair with vinyl upholstery, gas-lift height adjustment, five-star nylon base and hooded double-wheel casters

BOSS Office Products

BOSS Office Products B9090-CS office furniture

SKU CH-SCKQ-WVY7C MPN B9090-CS

Armless task chair with pneumatic height adjustment, antimicrobial vinyl upholstery and 275 lb capacity

  • Product typeChairs
  • Product colorBlack
  • DetailsBack Adjustment: No Arm Type: Armless Mechanism Type: Height
  • Ergonomic mid-back design relieves strain during long work sessions
  • Extra-large padded seat delivers lasting comfort for extended sitting
  • Pneumatic gas lift enables quick seat-height adjustment for a personalized fit
  • Hooded double-wheel casters provide smooth, steady mobility across the floor
  • Supports users up to 275 lb for reliable everyday use

Diamond Task Chair for Office Professionals

The BOSS B9090-CS is an armless mid-back chair built for mobile seating in any office environment. It targets users who want a compact footprint without sacrificing seat space. The antimicrobial vinyl upholstery resists germs in shared workspaces. It ships ready to assemble for immediate deployment.

Extra-Large Seat with 275 lb Capacity

An extra-large seat and wide back cushions provide generous surface area for extended sitting sessions. The contoured back delivers spinal support to reduce strain during long hours. The frame is rated for a 275 lb weight capacity, offering headroom for most adult users. Loads beyond that limit exceed the tested safety margin.

Height-Adjustable Pneumatic Gas Lift

A pneumatic gas lift allows quick seat-height changes to match desk height or user preference. The mechanism locks upright only; it does not offer tilt tension, knee tilt or infinite lock positions. Buyers needing recline resistance or a seat-depth slider should look elsewhere. Hooded double-wheel casters complete the mobility package.

How it compares

Measured against everything we stock in Office Desks, Chairs & Monitor Arms, at today’s prices. Recalculated every night.

Price $77.99
Cheaper than about 78% of the 5,255 comparable items (median $235.99).

Specifications

Product
Brand nameBoss Office Supplies
Model nameB9090-CS
Product typeChairs
Product colorBlack
Size & build
Shipping weight14.52 kg
Package size610 × 584 × 279 mm

Questions about this item

Will the B9090-CS chair's pneumatic gas lift work with my existing desk height?

The pneumatic gas lift lets you adjust seat height to match most standard desks; raise or lower until your forearms rest parallel to the desktop.

How do I verify the hooded double-wheel casters are rolling correctly after assembly?

Sit in the chair and push gently — all five casters should swivel freely and roll smoothly on hard floors or low-pile carpet without sticking.

Does the B9090-CS box include tools or only the chair parts?

The unit ships ready to assemble with all chair components and hardware included; a basic hex key or screwdriver is typically needed but not supplied.

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