PawHut 1375 GPH Adjustable Frequency Submersible Pond Pump Filter For use in aquariums, ponds, and other water related systems Well designed with variable frequency technology for a variety of settings: small power, large flow, high H-max, silence Adjustable flow rate Use with both salt and fresh water, indoors or out Overall dimensions: 6.8"L x 4.4"W x 4.9"H