New Design , Comes with Back Flow Prevention Rule Submersible Bilge Pump 12v DC Check Valve included for Back Flow Prevention Connections : For 25mm (1") and 28mm (1 1/8") bore hose. Dimensions : 111mm high, 64mm x 74mm. Current Draw : 3.7(amps) Fuse Size : 6 amp Output: Up to 69 litres/minute (15 gallons/minute) without check valve. Max recommended discharge head 2m. Built-in Thermal Cut-Off. Motor rated for 1500-hour life