Red Lion RL-SS100T 115V 1 HP Premium Submersible Stainless Steel Sump Pump Automatic submersible sump pump- ideal for high-volume water removable applications Heavy-duty stainless steel and cast iron construction- for years of service and reliability Clog-resistant design- capability of passing 3/4-inch diameter solids Piggyback float switch- reliable automatic operation for use in basins 16-Inch in diameter or greater