Made from UV-resistant PVC material (p/n GDDL101 is manufactured from UV-resistant ABS material) and including a 1½" reducer bushing and a ½" stackable extender, the 2" x 4" Gutter Deck Drain is perfect for any pool deck. The stainless steel screws and grate only option with two screws provide added durability and versatility. It is important to note that this deck drain should not be used as a suction outlet under any circumstances.