The going get tough with the TaskMaster Deluxe Industrial Chair. Difficult tasks don t stand a chance. With a 15 year warranty it offers an overall height of 17 to 35 with an 8 of pneumatic lift and an additional 10 with our Wave Tube Extension. Features include paddle lever controls for 10° seat tilt and 22° backrest tilt. Ergo knob controls 5 backrest height adjustment. 2-1/2 seat cushion depth. 360° swivel. Each features a 5-leg 26 diameter tubular steel base with 2-1/2 high-impact nylon glides for safety and stability. Sturdy ergonomically correct high mid and low-rung polypropylene footrests mount securely to base. Covered with Black microcellular self-skinning polyurethane foam. Assembly required. Features: Polyurethane seat and back with steel base Wheel / Caster Style: Glides Weight Capacity: 250 lbs. Wheel / Caster Size: 2.5 diameter Available in dark grey finish Seat Size: 18.5 W x 17 D Meets ANSI/BIFMA standards Back Size: 12 H x 15.75 W Pneumatic seat height and back height adjustment Base Size: 26 diameter 360° Swivel Posture Lock Assembly required Specifications: Seat Height: 17 to 35 Product Dimensions: 17 to 35 H x 26 W x 26 D