Barnes Pumps SP50AX Submersible Effluent Sump Pump, 1.5" Discharge, 1/2 HP, 120 Volt, 60 Hz, Single Phase, 3450 RPM, 1/2" Solids Handling, 112877 Part Number, 20' Cord Length, Manual & Automatic Best Performance in the Industry • Maximum flow rate to 80gpm (SP75), 66gpm (SP50), 50gpm, (SP33) • Maximum shutoff head of 33' • Permanent split capacitor motor for reliable, high performance, longer motor life, greater starting torque, and lower amp draw • Stainless steel hardware and shaft • GFCI compatible for safety • Pass up to 1/2” solids Barnes effluent pumps save time and replacement costs because they are interchangeable with competing effluent pump models. They require no additional plumbing when replacing most competitors’ pumps