Select options Snow Fence Brackets for Standing Seam Roofs $6.95 – $17.00 Cast snow fence brackets can be used on conventional standing seam roofs. Four set screws will anchor the bracket to the standing seam of the roof. One additional set screw will secure the square tubing in place. Snow fence brackets are available in two sizes; a narrow bracket for a 3/8″ (narrow) standing seam and a slightly larger bracket for a 5/8″ (wide) standing seam. Cast aluminum brackets are available in bare aluminum, as well as pre-coated in green and brown. Cast brass snow fence brackets, used on copper standing seam roofs, are available by special order. Lead time is approx. 3-4 weeks. Engineering stress report available upon request.