Do it No. 35B Wax Ring Extender Kit is designed for problem areas that require extra wax or where the floor flange is set too low, ranging from 1-1/4" to 1" below the finished floor surface. This ready-to-use kit fits both 3" and 4" waste lines and ensures a gas-tight, odor-tight, and water-tight seal for your toilet installation. The kit includes one urethane wax toilet gasket, one urethane wax toilet gasket with a polyethylene flange, and a 3-1/2" brass bolt kit, providing everything needed for a secure and reliable fit. Made with extra thick polyethylene material, this extender kit durability and effective sealing performance. Model Number: 004378