The Stainless Steel Liner Cap chimney cover by HY-C Company is constructed of 100% 304 stainless steel and built to withstand the toughest conditions. Ideal for oil, coal or heavy wood burners or for any application within 25 miles of a saltwater coast. High quality construction includes a 24-Gauge stainless steel hood with scalloped corners, 18-Gauge 3/4 in. expanded stainless steel mesh and 24-Gauge stainless steel bases for extra strength. Using the gear drawn clamp draw band, the Liner Cap chimney cover provides the securest possible fit to a rigid or flexible stainless steel liner. It is also adaptable for use with masonry flue tiles. Lifetime limited warranty. Material: Metal.