FMI/Superior Wood Fireplace 1 Inch Clearance Firestop for B36 Series Fireplace. Only FMI/Superior Chimney Wood Fireplace Chimney Liners and Chimney Liner Accessories are approved for use with FMI/Superior Wood Fireplaces. They are UL approved and are not for use with any product other than FMI/Superior Wood Burning Fireplaces.
- 1 Inch Clearance Firestop
- For use with B36 Series Fireplace