Master’s MAC-20F-DDF High Velocity Floor Fan delivers fresh air quickly to localized spaces.Great for spaces with or without air conditioning, Master’s 20” Floor Fan can take the edge off of your monthly energy bill by allowing you to use the A/C more sparingly.The MAC-20F-DDF utilizes our efficient direct drive design, which helps to conserve electricity. It has 3 speed settings, and features a heavy-duty all metal construction.Whether it’s a warehouse, garage, barn, or a crowded summer gathering, Master’s High Velocity Fans are an efficient way to cool all types of spaces.