Aluminum beams are lightweight, high-strength component that can often be handled by one workman. The beams are available in several sizes, including 6’, 8’, 10’, 12’, 14’ and 18’ lengths. Aluminum beams have a 2”x2” nailing strip in the top flange for fastening plywood decking and a clamping channel in the bottom flange for fastening U heads or stringers. The beam height of 6-1/2” matches most other existing brands.