Superior Firestop Thimble for 12" Standard Wood Burning Chimney nextrema-schott-glass Construction: Floppy polypropylene bristles

Construction: Floppy polypropylene bristles

Model Number FOAK-4 Catalog Number 81L87

glass fiber reinforced concrete

Currently meets 2020 EPA standards and is at the forefront of energy efficiency

Realistic log grate incorporated into the burner assembly

Superior Firestop Thimble for 12" Standard Wood Burning Chimney nextrema-schott-glass Construction: Floppy polypropylene bristlesFMI Superior Wood Fireplace Firestop Thimble for 12 Inch Chimney Pipe. 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. What's Included Firestop Thimble Features Includes Thimble only This is used in conjunction with FS 10 fire stop. For use with Superior