Rule 3700. Heavy duty construction for both commercial and pleasure boat use; known for trouble free operation and reliability. 1-1/2" (38mm) discharge outlet. 12 Volts DC unless noted.. Features:. Fully Submersible. Easy clean snap lock strainer. Silent and vibrationless operation. Anti-airlock protection. 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. Specifications. Voltage: 12 Vdc. Amp Draw: 15.5 amp. Fuse Size: 25 amp. Height: 7 1/4 inches 184 mm. Width: 4 7/8 Inches 124 mm. Weight: 5-4 lb 2.4 kg. Warranty: 5 years.