Industrial Seating Bench Height Conductive Vinyl Chair, Adjustable From 21-31", Nylon Base, Footring. Options include Armrests, 2 and 3 Lever Seat Control. 15 Year Warranty. - Heavy duty 450 pound capacity. 21.5" wide, 18" deep seat. 3" high resilient foam. Standard back. 16.5" high, 19" wide. Choice of 2 more backs.