These high volume, magnetically coupled, wet rotor pumps are durable, reliable and energy efficient. Their power and simplicity of operation make them the perfect choice for many water gardening applications, especially waterfalls. Uses 40-60 percent less electricity than direct drive pumps. Can be installed in line. One year warranty. 1-1/2-inch FNPT discharge and 1-1/2-inch MNPT suction. 20-feet power cord. 1-1/2-inch to 2-inch adapter included with all PWM pumps. Max flow 3525GPH and max height 14.5-feet.