1.[Compatible With]Freestanding tub drain rough-in kit for standing bathtub.Works with all standing bathtubs and standard bathtubs. The tub's tail piece is secured into place by multiple push-fit rings that create a water-tight seal.Freestanding Bathtub Rough-in Kit for added stability and of bathtub installation, effectively prevents water backflow and potential odor 2.[PVC Adapter Provided]PVC Plastic Adapter attaches Rough-in to PVC Bath wastes for quick, easy and clean installation,The epoxy-coated, 18-gauge metal deck flange features locking holes and screw fixings for stable mounting on wood, cement, tile, and concrete, for enhanced security and stability 3.[Protection Design]①Built-in snap off Test Cap allows for water/air testing; ②Blue Protection Cover-to prevent cement and masonry from falling in before installation is completed; ③2' to 1½' Drainage adapter, standard US plumbing connector fits perfectly in a 1½' or 2' p-trap 4.[DESCRIPTION]Freestanding Bathtub Drain Rough-In kit allows the D-W-V system to be pre-plumbed before making the connection between bath drain and the p-trap. This means no access panels required below the fixture.Just make a suitable hole on the bottom floor according to Freestanding tub drain body, and connect the drainage pipe to the D-W-V system 5.[Suitable for Freestanding Tub]Recommended for the plumber/remodeling contractor/builder/DIY person to install on Freestanding Bathtub, simple installation and easy drainage