The Carex Round Toilet Seat Riser fits most standard round toilets and adds an extra 3.5 to your existing toilet seat. The additional toilet seat height aids those who have difficulty bending or sitting. It s quick to set up: simply unpack the product remove your current toilet seat and reinstall your toilet seat with our riser underneath using the included hardware. The Carex Raised Toilet Seat is designed to assist those with sit-to-stand or stand-to-sit range of motion difficulties. It has a weight capacity of 300 lb and dimensions of 3.5 height 14 width and 19.25 depth. The product weight is 2.33 lb and the shipping weight is 4.08 lb. Please note that Carex does not accept returns on any toilet products including commodes and raised toilet seats (opened or unopened). If you are unsure if this will work for you please contact us at [email protected] or call us at 800-526-8051 so we can provide additional information and answer any questions.