FMI Wood Fireplace Storm Collar for 12 Inch Chimney Pipe. Only FMI Chimney Wood Fireplace Chimney Liners and Chimney Liner Accessories are approved for use with FMI Wood Fireplaces. They are UL approved and are not for use with any product other than FMI Wood Burning Fireplaces.
I know the closed diameter will fit a 12" chimney pipe, but what is the width of the metal?
By Collin C. - NFI Master Hearth Professional on May 22, 2013
This collar will have a width of approximately 3 inches around the perimeter of the chimney. Please keep in mind that this collar is designed to fit FMI 12 inch I.D. chimney, which has a 15 1/2 inch O.D.