The Normandy Drain Grate connects to 4 in. Sewer and Drain (S&D) fittings. The UV-stabilized high-impact polystyrene construction allows prolonged use. It works at a pressure of 5 PSI. It can be placed around patios, decks, or pools to prevent water damage. It meets ASTM standards for safe use, blocks debris, prevents clogging of your pipeline, and drains light flows of excess surface water. It can be used with a Pop-Up Drainage Emitter to discharge collected water at a point of release downstream.