1.Compatible With: The Freestanding tub drain rough-in kit Fits Stand Alone Bathtubs, Floor Mounted, Flexible and Quick Connect Tub Drain Stopper.Freestanding Bathtub Drain Rough-In kit is US Standard 1-1/2' Connection, Easy to Work with Universal Bathtub P Trap and Waste Drain Kit 2.Applicable scenario:The standing tub drain rough-in kit allows you to simply drop the tub into the floor without gluing the tub downspout.Just make a suitable hole in the bottom layer according to the independent bathtub drainage body, and connect the drainage pipe to the D-W-V system. Attach the metal drain pipe to the tub. Grease the pipe and drop into the product 3.Package Included:OD:9-3/8' Freestanding tub drain body, 1-1/2 in. x 7.7 in. flanged tailpiece, 1-1/2 in. x 8 in. threaded tailpiece, slip joint nut, lip joint washer, 1-1/2 in. PVC Sch. 40 threaded tailpiece adapter, 1-1/2 in. x 2 in. Sch. 40 PVC adapter, Screws required to secure the adapter 4.Install flooring surface:Make a suitable hole in the bottom layer based on the independent bathtub drainage body.Connect the drainage body to the drainage pipe and seal it.Remove the test plug,Be careful to lower the installed bathtub.The tail piece enters the Freestanding tub drain body.Ensure that the tail piece is fully engaged with the seal during assembly