The latest addition in our ever-expanding line of  products. Manufactured with top-quality ASTM A-653 galvanized steel, guarded with two layers of 1/16" wire or 1/8" expanded metal mesh, and fortified with intumescent tape for protection against radiant heat, flying embers, and direct flame penetration. The patent-pending* design is tested and certified by Cal Fire approved laboratories for approval of the ASTM E2886 and E2912 standards. Other styles, sizes, and materials (bonderized, copper, aluminum) are available as a custom order upon request.