This portable and lightweight 12 in (30.4 cm) DC blower is intended for applications requiring larger amounts of air output. It includes a 1/4 HP motor with an efficient three-blade impeller in a rugged metal housing. Our DC Blowers are designed to be used with standard car or truck batteries as the source of power. If it is necessary to leave the vehicle running to avoid draining the battery, it is important to ensure that the vehicle is parked downwind from the inlet of the blower to prevent any CO from entering the working area.