A firestop thimble is used to provide support for the chimney and to protect combustible materials from the intense heat of the chimney whenever a vent system has to penetrate a combustible wall or floor. This item is for use with the FMI 12" chimney system. Only FMI chimney liners and chimney liner accessories are approved for use with FMI wood burning fireplaces. In addition, these chimney liners and chimney liner accessories should not be used with any product other than FMI wood burning fireplaces.
- Firestop Thimble
- For use with FMI 12 Inch Chimney