High-Range Deluxe Industrial Chair offers an overall height of 17" to 35" with an 8" (200mm) of pneumatic lift and an additional 10" with Wave Tube Extension. Features include paddle lever controls for 10-degree seat tilt, 22-degree backrest tilt, 2-1/2" seat cushion depth and 360-degree swivel. Ergo knob controls 5" backrest height adjustment. Seat is covered with black microcellular, self-skinning polyurethane foam. Seat measures 18-1/2" x 17", and back size is 15-3/4" x 12". Each chair features a five-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. Holds up to 250 lb. Meets or exceeds ANSI/BIFMA standards.