Features Durable blow-molded plastic seat with optional backrest Anodized aluminum frame is lightweight, durable and rust-resistant Seat height is adjustable in 1 increments Attractive platinum grey color Comes assembled with tool-free back attachment Maximum Weight Capacity 600 lb EVENLY DISTRIBUTED Designed to meet the requirements of HCPCS code E0245Specifications Type Without backrest I With backrest Overall Width 18 I 18 Overall Depth 16 3/4 I 20 1/2 Seat Width 17 3/4 I 17 Seat Depth 12 I 16 1/4 Minimum Seat Height 14 I 16 Maximum Seat Height 17 I 20 Height of Back Support Above Seat N/A I 13 Maximum Weight Capacity EVENLY DISTRIBUTED 600 lb I 600 lb Warranty Lifetime limited warranty 1 Each/ Each 2 Each / Case