E-Sump Reef Sump 75 is a high quality, low cost wet-dry filter for all marine and freshwater aquariums. The Reef 75 is for tank sizes from 10 to 75 gallons with a sump capacity of 10 gallons. It includes a 200 micron filter bag, sponge and tray & cover. The bulkhead is 1 1/4 inches and the drain hose is 3ft x 1 1/4." Dimensions: L12"x W11" x D16."