Thetford 24818 Toilet Riser, 2.5" - Parchment Lifts toilets 2.5" raising the level of comfort and convenience For use with the following: Aqua-Magic IV, Aqua-Magic V, Aqua-Magic Galaxy, Aqua-Magic Starlite, Starlite II, Starlite Plus, Aqua-Magic Aurora Can also be used with SeaLand 510, 910, 2000, Traveler 110 (Lite,) Traveler 510, Traveler 511 Ideal for the physically challenged