Description Rule 360 GPH 12V Bilge Pump – Higher Flow optimized impeller to provide greater flow at the same amperage – Built-in Thermal Cut-Off (TCO) provides added protection for pump and vessel – Back Flow Prevention reduces the amount of water left over in the bilge, reducing odor and helping keep your bilge cleaner – Hidden Air Vents in the Body helps prevent air locking in challenging plumbing installations and helps with the check valve – Threaded Discharge easier installation, easier maintenance