The Rio 4HF HyperFlow Powerhead Flow rate is 260 gph.Max head: 5 feetConnections: 5/8" outputDimensions: 3.9" X 2" X 2.5"Titanium impeller shaft with ceramic bearingsFor freshwater and saltwater useComplete with mounting bracket and suction cups, strainer with sponge pre-filter and inlet and outlet adaptersMust be fully submersed