Assists those with bending or sitting difficulties. Adds 3-1/2 inches (8.9 cm) to height of toilet seat. Fits standard toilets. Installs easily using only a screwdriver. Contents: 1 toilet seat, 2 - 6.25 inch (15.9 cm) screws, 2 nuts. 13-1/2 inches w x 17-1/2 inches d x 3-1/2 inch h.