Specifications Uses: Adds height to the toilet seat for stability and to reduce bending and twisting Dimensions Of Standard Seat: Length of seat from front to back: 17.25" Length of seat inside from front to back: 11.25" Width of seat from left to right: 13.75" Width of seat inside from left to right: 9.75"” Height of seat: 3.5” Thickness of seat: 2” Dimensions Of Elongated Seat: Length of seat from front to back: 19.25" Length of seat inside from front to back: 13.25" Width of seat from left to right: 14" Width of seat inside from left to right: 10.5" Height of seat: 3.5” Thickness of seat: 2” Materials: Composite material How To Install: Remove the existing toilet seat and lid from the toilet Place the toilet seat riser on the rim of the toilet and center as necessary Attach the original toilet seat and lid on top of the toilet seat riser using the included hardware. Thread the screws through the holes in the back of the seat. The plastic washers are placed on the top of the screw and the metal washers are placed on the bottom. Tighten each screw with the butterfly nuts Care Instructions: Wipe down seat riser with a traditional disinfectant solution What’s Included: Hinged toilet seat riser 2pc - 3/8" bolts (6.125” in length) 2pc round plastic washers 2pc round metal washers 2pc butterfly nuts 60 day guarantee UPC: 818323021288 (Standard); 818323021271 (Elongated) Product Number: LVA1070S (Standard); LVA1070E (Elongated) Shipping Weight: 4.1- 4.7 pounds User Manual: Toilet Seat Riser