ADDS 5 INCHES TO THE TOILET SEAT HEIGHT. A 5” raised toilet seat that is also very comfortable. The toilet seat helps senior and handicap sit or get up from toilet easily. E-Z LOCK RAISED TOILET SEAT. A toilet seat riser that locks securely to round and elongated toilet seats. Includes built-in handgrips. FITS ROUND AND ELONGATED TOILET SEATS. The toilet seat riser will fit round and elongated toilets. The hole in the middle is 9”. EASY INSTALLATION. 3-step easy installation allows toilet seat to be installed in a minute or two. Fits most toilets. VERY COMFORTABLE. A raised toilet seat that is very comfortable. Toilet seat is designed to conform to body contours and is designed for those who weight 300lbs or less