The ProBasics Clamp-On Toilet Seat aids in making toileting more stable and comfortable for users. The clamp-on mechanism prevents shifting when the user is transferring to and from the seat for added peace-of-mind. Always make sure that the Clamp-On Toilet Seat is securely in place and stable before each use. Although the Clamp-On Toilet Seat is designed for use on most popular toilets, it may not work on certain unusual, elongated or artistic bowls. Features Clamp-on mechanism secures at front of toilet for easy, additional security Helps provide peace-of-mind for users Specifications Seat Dimensions 17 x 17 Seat Elevation 5.5 Product Weight Capacity 300 lb Warranty Frame 2 Year Sold per unit / 1 Unit Each