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Mid-back black task chair with adjustable arms and antimicrobial vinyl upholstery

BOSS Office Products

BOSS Office Products B9091-CS office furniture

SKU CH-3SPG-VEHRC MPN B9091-CS

A mid-back task chair with antimicrobial vinyl upholstery, adjustable arms, pneumatic height control and a 275 lb weight capacity

  • Product typeChairs
  • Product colorBlack
  • DetailsBack Adjustment: No Arm Type: Adjustable Mechanism Type: Hei
  • Ergonomic mid-back design promotes proper posture to prevent back strain
  • Extra-large seat and cushioned backrest deliver maximum comfort for long work sessions
  • Adjustable T-style armrests provide customised arm support at your preferred height
  • Pneumatic gas lift enables smooth seat-height adjustment for an optimal sitting position
  • Antimicrobial black vinyl upholstery resists germs while supporting up to 275 lb

Mid-back ergonomic task chair

The BOSS Office Products B9091-CS is a mid-back ergonomic task chair built for desk workers who sit for long periods. Its contoured backrest and extra-large seat cushion are shaped to promote posture and reduce back strain. Adjustable T-style armrests and a pneumatic gas lift let each user set their preferred height. Black antimicrobial vinyl upholstery resists microbial growth on the surface.

Thermals noise and power draw

This chair has no electrical components, so it produces no heat, draws no power and operates silently. The pneumatic gas lift adjusts seat height without a motor or battery. Hooded double-wheel casters roll quietly across hard floors or low-pile carpet. No fan, pump or electronic system is present to generate noise or thermal output.

Weight capacity 250 pounds

The supplier rates this model at 250 pounds maximum user weight, while the specification sheet lists 275 pounds; the lower figure should be treated as the working limit. Buyers who need a higher rated capacity should consider a different chair. The chair also lacks seat-depth adjustment, forward tilt lock and knee-tilt mechanism, so it does not suit users who require those ergonomic controls.

How it compares

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

Price $106.99
Cheaper than about 72% of the 5,255 comparable items (median $235.99).

Specifications

Product
Brand nameBOSS Office Products
Model nameB9091-CS
Product typeChairs
Product colorBlack
Size & build
Shipping weight15.42 kg
Package size610 × 584 × 279 mm

Questions about this item

How do I install the pneumatic gas lift into the chair base, and what step do people often miss?

Insert the gas-lift cylinder firmly into the centre hole of the five-star base until it seats fully; the step most people miss is pressing down hard enough to lock the taper before placing the seat assembly on top.

Which parts of the B9091-CS will need replacement first under daily office use?

The hooded double-wheel casters and the pneumatic gas-lift cylinder are the wear items; casters typically need replacing when they stop rolling smoothly, and the cylinder when it no longer holds height.

What is the first limit you hit when someone near the 275 lb rating sits in this chair all day?

The 275 lb weight capacity is the structural limit; sustained loads at or above that level will cause the gas lift to lose pressure and the base to flex before any other component fails.

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