4 deep well submersible pump, 220V, 3.3 Amps, 4 stage, mid intake (water-suction is in the middle of the pump). Patented impeller provides heavy duty high flow: 20 GPM. That is greater than almost all other 1/2HP well pumps. Solid stainless steel body with heavy duty cast iron discharge Industrial grade heavy duty, also good for home usage Built in 1/2 HP capacitor start, and thermal protection switch, for longer life and powerful start. Built in control box. This pump DOES NOT require an external control box! This pump uses high quality UL approved motor, UL file No.: E233961 This is a 2 wire pump with 3-Wire (2 wires + ground wire) 10' long electric cord comes with this submersible deep well pump. 1¼” NPT discharge Designed to fit inside 4 ID or larger pipe/well casing.