Ace Task Chair

Model ADI-AC-H
(You save $248.00 )
Black mesh and Reflex seat fabrics ship in 10-15 business days, otherwise 4 weeks

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Ace is an ergonomic solution with clean simple lines that will fit into any context. The mesh backrest as well as the lumbar support are both adjustable and offer comfort without compromise. Resulting from a renewed design process at ADI, Ace offers an extremely competitive price/quality ratio that will surprise you. Available in a choice of adjustable arms and a variety of fabrics (see fabric selector above). 5 Year Warranty.  All quick ship fabrics ship in an estimated 10-15 business days. All other textile selections leave the factory in 4 weeks.


  • Seat made of plywood and high resilience polyurethane molded foam
  • Backrest with ratchet and lumbar support both height adjustable
  • Standard configuration with grade A black fabric seat and black mesh backrest, all others 5 week lead time
  • All other seat upholstery materials are available with up-charge
  • Choice of 8 additional mesh colors
  • Tilt, synchronous 2:1, 4 position tilt lock
  • 2 ergonomic armrest options allowing for multiple adjustments
  • Black nylon resin or polished aluminum star base with casters equipped with a dust protector
  • 250 lbs. weight limit
  • 5-year warranty


  • overall 28"W x 19.5"D x 40-47"H
  • seat width 18.5"
  • seat depth 19.5"
  • seat height range 18.5-23"
  • backrest height 22.5-25"
  • backrest width 18.5"

Mesh Colors *Only black with Relex seat fabric is 5 day quickship


Adjustment Mechanisms:

  • Pneumatic Seat Height Adjustment - Moves the seat up and down to adapt to various body height  
  • 360 ° Swivel -Provides freedom of movement in any direction 
  • Front and Rear Tilt - Tilts seat forward and back to recline
  • Tilt Tension - Controls the rate and ease of recline
  • Adjustable Lumbar Support - Easily adjusts to enhance comfort and support lower back
  • Seat Slider Pan - Moves the seat cushion forward or back +2” and -3⁄4” from the standard position
  • Backrest Tilt - Tilts backrest independently

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Buying A.D.I. means buying durability. All A.D.I. products are designed to ANSI/BIFMA standards and carry a lifetime warranty on the steel structure, suspension belts, base, mechanism, casters and gas cylinder, and a 5-year warranty on carded fabrics (normal wear). Big and tall and 24/7 chairs are covered by a 5-year warranty on all parts.