M-D Building Products PROVA PIPE SEAL 4.72 In. x 4.72 In. with 12.5 MM Opening

PROVA PIPE SEAL is a prefabricated, waterproofing seal made of cut sections of PROVA-MAT. This seal features a flexible rubber collar with a 7/16 in. opening and is designed to seal pipe protrusions in showers. PROVA PIPE SEAL eliminates the need to custom cut waterproofing material around pipes reducing installation time. Install using Premium Modified Thinset and a 1/4 in. x 3/16 in. V-Notch Trowel. Do not use premixed mortar for installation of PROVA products.