Equip your semi with a steady flow of air conditioning all year round, with the OTR 4.5" x 3.4" Dual Rotation Blower Wheel with Expertise Built In™. With the aid of the resistor, this replacement blower works to manage the flow of air throughout the cabin, and adjust the speed of the fan as directed. Manufactured with precision components to provide enhanced longevity and efficiency. The air conditioning and heating system in heavy duty trucks has a major impact on drivers’ safety and comfort level. Whether you are looking for A/C compressors, condensers, driers, freon, or blower motors, FleetPride has the part you need to make sure your air conditioning and heating are well maintained. Keep your heavy duty fleet operations working as productively and efficiently as possible by finding the right air conditioning and heating part for you. FleetPride is your First Click in Heavy Duty®.