Wayne® SPF33 Thermoplastic Submersible Sump Pump with Vertical Switch, 1/3 HPUsed to remove ground water from sump pits. The most common application is to pump water from a pit located in the basement that collects groundwater from a perimeter drainage system designed to prevent basement flooding. 1 3 HP Designed for 11" diameter or larger sump basin Pumps up to 3600 GPH @ 0' Vertical float switch for automatic operation Oil filled Thermally protected motor prevents overheating Reliable, reinforced poly carbonate impeller Top