Lindemann 150738 Hy-C 13 Inch x 18 Inch Copper Draft King Chimney Cap

This 13in X 18in Copper HY-C Chimney Cap features 24-gauge copper lid construction with scalloped corners and roll formed edges. The .75in copper mesh is 18-gauge. This cap features a lifetime warranty. Fits flue sizes from 11.5in X 16.5in up to 13.25in X 13.25in . The 13in x13in size is pictured.