Designed specifically for the marine environment with run dry premium impeller technology. Capable of 13 gpm, the SHURflo macerator also features a high-quality motor with new seamless shell, splash-proof design and rear o-ring shaft seal. New innovative blade design ensures problem free pumping. The inlet port has both a 1.5" hose barb and 1.5" male thread to screw directly onto a tank flange. Has a 1' outlet barb.