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The most distinctive trait of the USG Durock™ Shower System Drain Assembly is its innovative, square design, which accepts both 4" and 5" Durock Shower System Designer and Pro Series grates in a single drain body. This geometry allows more lateral adjustment than traditional round-body drains.
The USG Durock™ Shower System Drain Assembly also features an innovative bushing design — one PVC and one ABS bushing included with drain assembly — that allows for solvent-weld and no-hub connections to 2" or 3" ABS or PVC waste lines. This, combined with the square geometry, makes it the only universal drain on the market.
Furthermore, unlike competitive offerings, the drain’s integrated bonding flange features a nonwoven fleece on both the top and the bottom of the flange. The fleece on top provides ample surface adhesion for the waterproofing membrane, while the fleece on the underside provides the necessary bonding surface for the mortar that supports the drain assembly. The fleece is co-molded with the ABS drain body to ensure the highest possible permanent bond.