The Thetford Toilet Riser raises your permanent RV toilet 2.5" for greater comfort, convenience, and accessibility. This toilet riser is designed to mount on all existing closet flanges. Fits Thetford Aurora, Galaxy, Starlite, Starlite II, Starlite Plus, Aqua-Magic IV, and Aqua-Magic V models. Can also be used with SeaLand 510, 910, 2000, Traveler 110 Lite, Traveler 510, and Traveler 511 (additional plumbing materials may be needed). Made of polypropylene. Mfr. No.: 24818. Made of polypropylene | Thetford 2.5" Toilet Riser, Parchment