Blue Angel Pumps SSF33S 1/3 HP Premium Series Submersible Stainless Steel Sump Pump Corrosion Resistant Stainless Steel Motor Housing and Fasteners For Long Life in ToughSump Applications Top Suction Design Eliminates Air Locks and Minimizes Clogging from Debris in the Bottomof the Sump Pit Reliable Thermoplastic Impeller for Maximum Water Flow 1-1/2 in. NPT Discharge for Easy Installation and Compliance with Building Codes For Use In 11 in. Diameter or Larger Sump Basins