Square, contoured hardboard seat. 16 rivets on seat to prevent warping. 0.63 in. O.D. foot rings welded to each leg by four contact points at each leg for added rigidity. Adjustable with vinyl padded backrest. Adjusts up or down and forward or back. Steel contain 30-40% of post-consumer waste (recycled). Meets ANSI and BIFMA standards. Warranty: Five years for material. Made from 0.88 in. O.D. 18-gauge steel tubing. Backrest: 12 in. W x 6 in. H. Overall: 15 - 19 in. W x 38 - 47.5 in. H (18 lbs.). Assembly Instructions