Crawford Adjustable Overhead Storage System: * It installs in minutes. * Easily mounts to exposed rafters or finished ceilings. * All mounting hardware is included. * Great for storing ladders, lumber, screens, windows, conduit, sporting goods, seasonal items and more! * Expands 32" to 48" for use with ceiling rafters spaced on 16" center. * Welded mounting brackets can be turned in the direction of the beam.