Rule 1500 High pumping capacity and reliability at a lower cost. The Rule 1500 offers more pumping capacity and more exclusive design features than any comparable competitive pump. 1-1/8" (28.6mm) discharge outlet. 12 Volts DC unless noted. Features: Fully Submersible Easy clean snap lock strainer Silent and vibrationless operation Anti-airlock protetion Compact, efficient long life motor Ignition protected No burn-out when run dry Rust and corrosion protection Used by leading boatbuilders worldwide Marine grade blocked wiring