HY-C SCADJ-L-C Shelter Adjustable Clamp On Single Chimney Cover, 5/8" Mesh Compliant with NFPA 211 and California Building Standards, Fits Outside Various Sizes of Existing Clay Flue Tile, Large, Black Galvanized Steel Outside mounting design provides maximum free air space and better draft while attractive powder coat finish helps it stand up to the elements Fits outside flue tile dimensions: 13-in x 13-in, 13-in x 18-in, 9-in x 18-in, 12-in x 16-in, 8-in x 17-in oval, 10-in x 17-in oval, and 13-in x 17-in oval Made with a 24 gauge galvanized steel hood with scalloped corners and stainless steel mounting brackets for secure mounting Quick and easy installation requires only a screwdriver; Made with 18 gauge 5/8" spark arrester mesh to comply with NFPA 211 and California building codes Made in the USA; Five (5) Year Limited Warranty