Overview Product Description D143 5.0 Diameter Ventilator and Unit Heater Motor 1/30-1/40 HP 1/30-1/40 HP 115 Volts 1050 RPM 2 Speed 1.5-1 Amps Open Vent. Enclosure CCWLE Rotation Sleeve Bearing 1/2 x 1-5/8 shaft Dim. Roof top Ventilator Replacement for Siegler & Williams wall heaters Cross Reference: A051082106 Product Videos Custom Field Product Reviews