This elevated toilet seat fits most standard and elongated toilets. The standard locking mechanism  ensures a tight fit providing additional safety and added feeling of security. A wide opening in the front and back allow for worry-free personal hygiene. The 4.5 in. elevated seat will help individuals who need a boost sitting down or standing up from the toilet. The seat width is  17 inches and the seat depth is 16.5 inches. The seat weighs 4 lbs and supports 300 lbs. Lightweight and portable. No tools required to install and easy to clean. For consumers using a wheelchair, this product allows for easy transfer to and from the raised toilet seat. The product is protected by a limited lifetime warranty.