PROVA DRAIN is an easy-to-install drain system that can be used with PROVA PAN, PROVA PAN-MULTI, and mortar bases to allow water to flow out of the shower. PROVA DRAIN is coated with PROVA-BOND surface treatment technology, which provides a waterproof, strong, and reliable bond between the drain flange, mortar, and shower pan. Each drain includes a grate housing with a height-adjustment collar and ring for adapting to multiple tile thicknesses.