Assembled With Tool Free Removable Back And Arms 1 Aluminum Frame Is Lightweight Sturdy And Corrosion Resistant Height Adjusts In 1 Increments With Unique Dual Column Extension (16 - 21 ) Armrest Is Reversible To Accomodate Any Bathroom 3 Position Back Depth Is Adjustable From 18 - 19 In .5 Increments Extra Large Suction Cups Provide Added Safety Seat Dimensions: 25.5 W X 18 D Limited Lifetime Warranty Hcpcs Suggested Code: E0248