• IP-55 cast iron, Meets or exceeds NEMA Premium® efficiencies, NEMA Premium models are in compliance with EISA2007 • IClass F Insulation System, Inverter duty 10:1 variable torque and 10:1 constant torque & 1.15 service factor on Sine Wave Power 1.0 SF on Inverter Power • IF1/F2 capable, Dynamically balanced rotors, Steel conduit box • IDual Frame Mounting • IModifications and Kits are available • I40°C Ambient 1.15SF Sine Wave Power and 1.0SF inverter power • IDivision 2 Class 1 groups A,B,C,D this is for TEFC models, T2B temp code • IUL®* listed, UL certified for Canada and CE®* mark