THETFORD 24818 RV Trailer Camper Sanitation Toilet Riser Parchment Toilet Riser; Used For Aqua-Magic  Aurora/ Aqua-Magic  Galaxy/ Aqua-Magic  Starlite Permanent Toilets; Rises Seat Height 2-1/2 Inches; Parchment White Raises the level of comfort and convenience for RVers by raising toilet seat height. Fits All Thetford Toilets