The new and improved Rio plus 3100HP pump provides veriatile water pump system designed with high effeciency and reliablity at a lower cost. Designed with the nebyt generation in magnetic motor technology and offer the best high performance solution in the aquarium industry. The Rio 3100 HP can be used on wet/dry filters, sump pump, large protein skimmers, small ponds andor fountains. 900-gallon per hour Dimensions 6.3-inch L by 4-1/4-inch w by 4.24-inch H UL listed.