Safe-Lec 2 Double-sided Flange Bracket. For Beam Flange 3.15 inches to 7.28 inches (80 to 185 mm). Zinc Plated, For Mounting Top of Beam Flange using Two Girder Clamps for Each Bracket (XA-51142). Bars Will be Installed on Both Sides of Beam Locate and secure support brackets at the recommended spacing (max of 59 inches apart. (Note: Locate support brackets at a spacing that is divisible into the conductor bar lengths - typical # per section = 3. This will always ensure that the joint positions do not interfere with the support brackets).