This brush-finished, 100% 304 stainless steel-flue cap features classic styling. It is fully resistance-welded and features a roll-formed, 18-ga., one-piece base. The extra wide base contains a concave channel for added strength, good looks, and versatility. This single-flue cap features a 24-ga. lid with a one-piece, 8" high, 3/4" mesh, 18-ga. stainless steel screen.Also comes with a life time warranty.