• Can Be Used For Built-In Utility In Showers, Bathrooms And Kitchen Backsplashes • Allows For More Free Space On Floor Or Counter Of Any Necessities • Can Be Used With PROVA-MAT® Or PROVA BOARD® PLUS When Installing A Tiled Shower • Premium Polymer-Modified Thinset Mortar Required For Installation (Premixed Mortar Or Mastic Are Not To Be Used) • Mfg #TT8800NCH16