The Elongated Elevated Toilet Riser with Arms gives the user the elevation of a toilet riser but still allows them to use their own seat. Padded removable arms make it more secure when getting on or off the commode. The seat can be installed securely under your existing toilet seat using the included screws and bolts. This seat is also available in a standard size so please check the size of your toilet bowl before purchasing. Elongated Seat Depth: 19.5 Overall Width with Arms: 19.25 Riser Height: 3.5 Tools required for installation.