This wall thimble is required when a chimney system passes through a combustible wall. It provides support for the chimney as well as providing the required clearance to combustibles. This thimble accommodates the 3" Dura-Vent Type B gas pipes and can adjust to fit walls with thicknesses of 3.5" to 6". The item carries a 25-year warranty. Dura-Vent Type B gas vent pipes can be used to vent a wide variety of appliances that use natural gas for fuel.
Provides required combustible clearance for through-wall venting
For use with 3" Dura-Vent Type B Gas Vent pipes
Adjusts to accommodate walls with 3.5" to 6" thickness
Manufacturer:DuraVent Part Number: 3GVWT eFireplaceStore Item Number: CPF-68360 UPC: 662492000212