The ventilation system is critical for any gas appliance system. A critical area that needs additional protection is around the combustible walls that the ventilation pipe passes through. Ensure that your combustible walls are well protected with this insulated thimble from Insul-Flue. The thimble can protect up to a 7 inch wall, and another thimble can be employed to pass through walls up to 15 inches thick. High quality construction ensures proper durability that will last a lifetime.
- Allows passage through a combustible wall into a masonry chimney when used with cover
- For use with vent pipe with a 8" inner diameter
- 8" long thimble can pass through a 7" thick wall
- May be cemented to another thimble to pass through walls up to 15" thick
- UL Listed
- Required Opening: 17" x 17"