Single & Double Arm Dock Fans helps cool hard-to-reach loading and unloading areas. Loading Dock Fan provide an ideal solution for cooling and ventilating loading docks, shipping areas, warehouses, and a variety of industrial applications. Durable hinged twin-strut steel arm helps prevent sagging, extends up to 40 and folds compactly. Adjustable friction pivot maintains position. Meets OSHA requirements. Brands offered include Global Industrial, Wesco, TPI, and Multifan.