Choose Oatey® Shower Pan Accessories and Kits for your shower installation job. The Oatey Perfect Slope is made for use on tile shower installation extensions to accommodate larger shower configurations. Perfect Slope reduces overall installation time by eliminating the need to pour a pre-sloped concrete base below the liner. Oatey Corner Dams are designed to seal the junction of the curb and door jamb where a shower pan liner was installed.