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: 1200 gphMax head: 15.4 feetAmps: 1.9Dimensions: 11.1" X 4.4" X 5.25"Connections: 1" MPT Inlet / 1" MPT OutletPerformance charts (new window)Further specifications (pdf file in new window)