Evergreen EM - Dual Voltage Constant Torque ECM Replacement Blower Motor. Pre-Programmed at the factory - ready to use out of the box - increase first time completion - rotation sensing technology. 5.6" Diameter - 48 Frame, Electronically Commutated (ECM), Electronically Protected. Up to five constant torque settings controlled by 24 VAC inputs. Fully variable (PWM compatible) from 600-1100 RPM. Open Air Over, Class B Insulation, 45 Degree Celsius; Ball Bearing. Shaft: Single, 1/2” diameter, 5” length, 4.5” single flat - 42" Leads. Belly Band Mount (Belly Band Not Included).