The arms are available in various lengths which include 12”, 18”, 24”, 30”, 36”, 42”, 48”, 54”, 60”, 72”, 78”, 84”, 90”, 96”. The arm plate connection is identified as 3”MD, 4” MD, 4”HD, 5” HD, 5.5” HD and 6” XHD which indicates the spacing between each punched hole for bolts. The plates are either 1\2” thick or 5\8” thick and have four ø13/16” or ø ½”punched holes at each corner. The plate requires 4-ASTM A325 structural bolts specified and tested for this specific purpose. These bolted connections fixes the arm to the rack column on one end and is free on the opposing end resulting in a cantilevered rack arm. The arms are designed to resist uniformly distributed loads exerted by the product that is supported and shall be manufactured of structural S-sections, W-sections or equivalent structural profiles. The supported load should be placed centered on the arm and should refrain from exceeding the edge of the arm. The arms are used for interior and exterior purposes. For all indoor applications the arms are finished with a powder-coated standard paint which provides ultra-resilient protection. In the case of outdoor applications the arms are hot-dipped galvanized which enhances corrosion-resistance. This finish shields against harsh weather conditions and is long-lasting and maintenance-free. Premium colors are available according to preference. Quick ship is limited to standard Grey finish cantilever arms used for indoor applications.