ID357 OSB Cast Iron Island Tub Drain Testable Rough-in for Freestanding Bath Tubs Install a Freestanding bath tub in minutes with the Island Tub Drain. No muss. No fuss. No kidding.Newly redesigned Asymmetrical Deck Flange makes installation in tight spaces easierAllows for freestanding Tub location to be defined at rough-inAllows for freestanding Tub to be installed over finished floorBuilt-in Snap-off Test Cap allows for water/air/smoke testingNOTE: Island Tub Drain IS NOT FOR USE with liquid applied or sheet membranesNOTE: Island Tub Drain MUST BE INSTALLED in a dry area with no potential of water contact Features : Built-in Snap-off Test Cap allows for water/air/smoke testing (Rated to 30psi)18 Gauge Epoxy coated Metal Deck Plate with holes to lock in Thinset1-1/2 in IPT Female Thread ConnectionID357 is a Freestanding Tub Rough-in (install before tile installation) Includes :2 Brass Tailpieces (Fine Thread and Flanged)ABS or PVC Adapter Kit (attaches ID357 to ABS or PVC Bath Wastes)Mortar/Tile guardIsland Drain assembly