(On Variable Speed Drives) Rated at 300 GPM @ 50 ft, TEFC, Inverter Rated Motor, Class F Insulation, Efficiency Level EFF-3 (Premium), IEC Standard Type, 52" extension into the sump, fitted with a 20-3/4" round cover plates. Nitrile bottom bearings with non-metallic shells. 4" flanged discharge. External bearing frame with a packing gland seal. CE Documentation Required