●All Of Our Fountain Pumps Have An Adjustable Flow Control To Fine-Tune The Flow Rate And Pumping Height; When In Doubt, More Pumping Height Is Better ●These Pumps Perfectly Fit Into Existing Fountains And Water Features; They May Be Small, But They Are Built To Pump A Lot Of Water ●Dimensions 4.38 X 2.36 X 3.35 In ●42 Watts, 7.9 Max Head