Rule 7700D Evacuator Pump, 3" discharge port, 12 volt. 7700 gallons per hour. Made for fast evacuation of water from a vessel. Also used for dewatering flooded basements, swimming pools and excavations. Features two 4000gph pumps working as one and a built-in back-up for each pump to operate independently if necessary. SIZE: 14.6 x 12 x 11.5 inches.