The Master® MAC-30D barrel fan keeps your space feeling cooler by circulating large volumes of air. Great for spaces with or without air conditioning, this barrel fan can take the edge off of your monthly energy bill. Circulate some air before turning on the A/C, or leave the A/C off altogether. The MAC-30D uses our efficient direct-drive design, which helps to conserve electricity. It also features our convenient fold-out wheel design that makes mobility easy and storage simple. Whether it’s a warehouse, garage, barn, or a crowded summer gathering, Master high capacity fans are an efficient way to cool all types of spaces.