The Essential Hinged Toilet Seat Riser is a 3.5 inch high riser that features a hinged design. People with arthritis will find the seat is easily installed under their existing toilet seat to make it easier to sit and stand safely. The Essential Hinged Toilet Seat Riser raises the toilet seat 3.5 inches and hinges to make it easy to clean. Standing from a standard height toilet is often difficult. By adding this 3.5 inch high riser, users can stand and sit easily. The two piece unit that locks together and can be easily lifted with the seat to allow the user to wipe down under the riser. This elevated toilet seat is easy to install with the included 6 inch long bolts with wing nuts, and has a 300lb weight capacity. The Essential Hinged Toilet Seat Riser is available in a standard round model or elongated model. For additional support for sitting and standing safely from the toilet, use the Essential Hinged Toilet Seat Riser in combination with the Essential Adjustable Toilet Safety Rails AEM240. For health safety, this is a non-returnable hygiene product. Essential Hinged Toilet Seat Riser Specifications: Choose model: Standard Round or Elongated. Weight Capacity: 300 lbs. Seat height elevation: 3.5 inches. Standard Dimensions: 11 inches long inside opening, 17.5 inches long overall, 13.5 inches wide, 3.5 inches high. Elongated Dimensions: 19.25 inches long overall, 14 inches wide, 3.5 inches high. Made of: Easy to wipe down molded plastic.