Master Plumber, 1/2 HP, 230V, 4" Stainless Steel Submersible Well Pump, 3 Wire, Performance: GPM 20' = 13.2, 40' = 12.2, 60' = 10.9, 80' = 9.6, 100' = 8.1, 150' - 2, 4" Inside Diameter Or Larger Wells, Patented Floating Stack Design For Sand Resistance & Reduced Sand Locking, Corrosion Resistant Stainless Steel Pump & Motor Housing, 1-1/4" Discharge Connection, Precision Molded Impellers & Diffusers, Built In Check Valve, Requires A 1/2 HP Control Box, Not Included, Use Master Plumber Control Box TV #123-329, 3 Year Warranty.