HY-C LC11 Round Stainless Steel Clamp on Single Flue Liner Chimney Cap, 11" Designed for metal chimney application. Not suitable for masonry flue. Fits outside tile (inches) 10.5 to 11.5 Constructed of 100% 304 stainless steel and built to withstand the toughest conditions. Easily mounted with 1.5 inch gear drawn clamp band. Completely assembled with welded construction. Made in USA. Lifetime limited warranty.