Untrapped Concrete Ground Floor Gully: 1½" (1.1/2") BS EN 1329-1:2000 Solvent Weld Horizontal Outlet: 150mm Square White ABS Tile with removable Grid Size: 1½" (1.1/2") Material: ABS Height: 68mm Please Note: Only suitable for concrete ground floor installations where a waterproofing membrane is not required.