Blue Angel Pumps F50S 1/2 HP Professional Series Submersible Cast Iron Sump Pump Cast Iron Pump Housing/Base with TopSuctionIntake to Filter Debrisand Minimize Clogging Corrosion-Resistant Thermoplastic EngineeredFlow Diverter, for Switch Protection Stainless Steel Upper and Lower Float Guard and Float Guide Corrosion-Resistant ThermoplasticImpeller forMaximumWater Flow, and Long Life in ToughSump Applications 1-1/2 in. NPT Discharge for Easy Installation andCompliance with Building Codes