The RLXT type aquarium pumps are best suited for circulation only--situations where water encounters very little back pressure. The WMD pumps have American motors.Flow rate: 960 gphMax head: 13.5 feetAmps: 1Dimensions: 12.1" X 3.5" X 5"Connections: 1" MPT Inlet / 1" MPT OutletPerformance charts (new window)Further specifications (pdf file in new window)