Without Back Extra strength aluminum will accomodate individuals up to 500 Lbs. Cross brace attached with aircraft-type rivets Blow-molded bench and back provide comfort and strength Drainage holes in seat reduce slipping Adjustable height legs Aluminum Frame is lightweight durable and corrosion proof Height: 16 1/2 - 20 1/2 20 width seat Limited Lifetime Warranty HCPCS Suggested Code: E0245 KD