Remove light flows of excess water from patios, decks, and around pools with the 3 in. S&D Deck Drain. Comes with an adapter to connect to 3 in. Sewer and Drain (S&D) pipe and drain grate (also known as a drain cover) to block leaves and debris from entering and potentially clogging the drainage system. This Deck Drain has an open surface area of 2.6 sq. in. and flow rate of 8 GPM. The Deck Drain is made of high-impact polystyrene (HIPS) treated with UV inhibitors. For use in non-pressurized underground sewer and drainage applications; maximum working pressure of 5 psi.