500 GPH. Magnetic drive technology eliminates unnecessary failures. Patented anti-airlock feature allows the pump to clear trapped air in rough water or when the boat is anchored. Includes a dual port for easy washdown pump connection. Continuous duty. Ignition protected. Inlet port: 3/4″. Outlet port: 3/4″. Tank size: 30 gallons. Dimensions: 4.93″ x 7.85″. 12 volt. 3 year warranty.