Hinged design for easy cleaning. Installs under existing toilet seat. Adds 3.5" to heaight of toilet seat. Fits most elongated toilets. 300 lbs weight capacity. Securely attaching in seconds, the Hinged Toilet Seat Riser installs easily and quickly in your bathroom. Once it is secure, the Hinged Toilet Seat Riser will give you an additional 3.5 inches of height. With the few extra inches of height, individuals with mobility difficulties find sitting and standing to be less strenuous with the Hinged Toilet Seat Riser. In addition to being safe, the Hinged Toilet Seat Riser is incredibly easy to clean, too. You may select the Hinged Toilet Seat Riser either in an elongated or round shape to find the best fit for your toilet. Hinged Toilet Seat Riser Features and Benefits Adds several inches to the height of your toilet seat. Fits most round or elongated toilet seats. Hinged design for easy cleaning. Installs under existing toilet seat. Hinged Toilet Seat Riser Specifications Sizes: Elongated and round. Weight Capacity: 300 pounds. B32100 Dimensions (Elongated Toilet Seat): Height: 3.5 inches. Width: 13.75 inches. Depth: 19.25 inches.