Our copper Draft King chimney cover combines the decorative elegance of pure copper with the durable construction and functionality that are hallmarks of HY-C Company chimney caps. The 24-gauge 100% copper hood with scalloped corners and roll-formed edges, 18-gauge 3/4" expanded 100% copper mesh, and 16-gauge copper-plated stainless steel base make this an exceptional cap that will naturally oxidize and develop an attractive patina over time. Like all Draft King caps, the outside mounting design engineers a maximum free air space allowing uninhibited chimney draft. Using slotted hex-head stainless steel mounting bolts, Draft King's unique corner chimney cover mounting attachment provides the most secure fit possible to a masonry flue tile. Copper Draft King chimney covers are made in the USA and backed by HY-C's Lifetime Limited Warranty.