Rule 25DA-24 Bilge pump, 3/4 outlet, 24 volt. 500 gallons per hour. NON-AUTOMATIC. Features exclusive Rule moisture tight seals. Compact, efficient, maintenance-free positive snap lock strainer base. Totally submersible, silent running, vibration less, ignition protected, water-cooled motor. Anti-airlock features, no burnout when run dry. Stainless steel shaft.