Our Model 73 Sump Pump is designed to remove unwanted groundwater in residential basement sump applications. The 0.33 HP Model 73 is an economical option when a sump pump is required. The Model 73 is compact, lightweight, and economical. Additionally, it is a fully automatic sump pump with a built-in float switch. So, it can be installed in minutes and depended upon for years.The Model 73's switch motor housing is constructed of cast iron to maximize heat dissipation. The cap, pump housing, and based are constructed of engineered plastic. This durable plastic allows the Model 73 to withstand a wide variety of basement sump conditions. The corrosion resistant engineered plastic vortex impeller has a smooth surface allowing water and solids to pass freely through the pump.Every pump is submerged in water and tested to its published performance curve, ensuring it meets your expectations and delivers peace of mind right-out-of-the-box.