Rule submersible bilge pumps have set the industry standards for quality. Designed with a silent, vibrationless 12V motor that will not burn out when it is run dry. This bilge pump is totally submersible with moisture-tight teflon seals and a protected ignition. Features easy-clean snap-lock strainer that is gas resistant, anti-airlock protection, stainless steel shafts, and rust/corrosion protection. The 20F model offers 36 mounting variations. 1-1/8" hose outlet.