Ideal for oil, coal, or heavy wood burner chimneys, the stainless steel Draft King chimney cap by HY-C Company is constructed of 100% 304 stainless steel and built to withstand the toughest of conditions. This cap's durability is rugged enough to tackle any application within 25 miles of a saltwater coast. Its high-quality construction includes a 24-gauge stainless steel hood with scalloped corners and roll-formed edges, an 18-gauge 3/4" expanded stainless steel mesh, and a 16-gauge stainless steel base integrated for added strength. Like all Draft King chimney 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 cap mounting attachment provides the most secure fit possible to a masonry flue tile. Stainless steel Draft King chimney caps are made in the USA and backed by HY-C's Lifetime Limited Warranty.