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Black heavy-duty office chair with 27 inch steel base, dual wheel casters, spring tilt mechanism and pneumatic gas lift

BOSS Office Products

BOSS Office Products B996 office chair 400 lb capacity

SKU CH-1VWC-V9RNM MPN B996

Heavy-duty task chair with spring tilt, pneumatic height adjustment, tilt tension, upright lock and 400 lb capacity

  • Product lineBlack
  • Origin countryChina
  • Color and finishBlack
  • Product typeChairs
  • Key featuresHeavy Duty Upholstered Spring Tilt Mechanism Pneumatic Adjus
  • Supports up to 400 lb with heavy-duty construction
  • Spring tilt mechanism shifts weight to the backrest for comfort
  • Pneumatic gas lift enables easy seat-height adjustment
  • 27 inch steel base with dual-wheel casters provides stable mobility
  • Tilt tension and upright lock give posture control

Heavy-duty task chair for 400 lb capacity

The BOSS B996 office chair is built for users who need a reinforced seating solution rated to 400 lb. A heavy-duty spring tilt mechanism shifts the entire seat angle so upper-body weight transfers to the backrest, while pneumatic gas lift provides smooth height adjustment. Black crepe upholstery covers the seat and back for a professional appearance in workplace settings.

Thermals noise and power draw in normal use

As a non-powered mechanical chair the B996 produces no operational noise and draws no electricity during everyday use. The 27 inch black steel base with 2 inch nylon dual-wheel casters rolls quietly across hard floors or low-pile carpet without generating heat. Tilt tension control lets each user set resistance to match body weight and preference.

Sustained-load behaviour over a full workday

The spring tilt mechanism maintains consistent resistance throughout extended sitting periods without the sag or softening seen in lighter-duty designs. Upright locking holds the backrest fixed when focused tasks demand a static posture, then releases instantly for recline. Steel base and dual-wheel casters retain stability and roll quality after months of daily 400 lb loading.

How it compares

Measured against everything we stock in Task Chairs & Office Seating, at today’s prices. Recalculated every night.

Price $202.99
Pricier than about 71% of the 119 comparable items (median $129.99).

Specifications

Product
Brand nameBoss
Product lineBlack
Product typeChairs
Color and finishBlack
Size & build
Shipping weight22.00 kg
Package size737 × 686 × 432 mm
More details
Origin countryChina
Needs assemblyYes

Questions about this item

How do I attach the 27 inch steel base and 2 inch nylon dual wheel castors during assembly, and what step is commonly missed?

Insert each castor firmly into the base sockets until they click, then lower the gas lift cylinder into the centre hole; the step often missed is seating the castors fully so the chair rolls smoothly and does not wobble.

Which parts of the heavy duty spring tilt mechanism or pneumatic gas lift will need maintenance or replacement over time?

The gas lift cylinder may lose pressure after extended use and the tilt tension spring can fatigue; both are serviceable components that can be replaced to restore height adjustment and recline resistance.

At what load does the 400 lb rated structure show stress first during sustained daily use?

The 400 lb capacity is the structural limit; approaching this weight consistently will stress the steel base welds and gas lift seals before any other component.

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