0verall height range of 19" to 27" and an 8" (200mm) pneumatic lift as well as a 5-star, 25" dia. nylon base, 3-piece telescoping dust cover and 2" high-impact nylon glides. Includes 20" dia. chrome-plated footring. Contoured, oversized seat design, backrest tilt and height adjustments. 360º swivel. Seat cushion depth of 2-1/2". Seat has a 10º seat tilt with paddle lever. Backrest has paddle lever control for 22º backrest tilt and ergo knob adjustment for 5" backrest height. Meets or exceeds ANSI/BIFMA standards. Black microcellular, self-skinning polyurethane foam seat and back. Assembly required. 15 Year Warranty