The reel system is usually mounted to the underside or rear deck of a truck or trailer. It has three brackets that hold the mat and underlay. Electric Storage Reels is available in either 110 volt or 12 volt. The width of the reel can be built to meet the needs of the application. Storage Reels are used to store the mat and for transporting the mat from site to site. Manually cranked reels are also available.