Oatey Set-Rite Toilet Flange Extension Kit is a UPC listed water tight solution for raising the toilet flange during a remodel. It can correct flange elevations ranging from 1/4 in. to 1-5/8 in. with different spacer sizes. The kit includes 4 different size spacers and six self tapping screws to complete the installation. Oatey products have earned the trust of plumbing professionals for over 100 years.