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    Dura-Vent Type B Gas Vent Wall Thimble - For Vent Pipes with a 4-Inch Diameter - 4GVWT

    List Price: $29.99
    Sale Price: $24.37
    You Save: $5.62 (19%)
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    Product Details
    Free Venting Design & Quote:
    Manufacturer: DuraVent
    Part Number: 4GVWT
    eFireplaceStore Item Number: CPF-68460
    UPC: 662492000472


    • Provides required combustible clearance for through-wall venting
    • For use with 4" Dura-Vent Type B Gas Vent pipes
    • Adjusts to accommodate walls with 3.5" to 6" thickness
    • 25-year warranty

    *Venting Requirements: This unit requires venting pipe with an inner diameter of 4 Inches. Please see the Venting Components section on this page for venting pipe that must be used with this unit.

    When it comes to meeting building codes and safety standards it makes the process much easier when the build products available help you meet those codes and standards. Dura-Vent has created a wall vent thimble that meets the clearance requirements that you need when you are installing a gas vent through a combustible wall. Using a type B gas vent wall thimble will help you seal the area around the vent as this model is adjustable for walls of 3.5" to 6" thickness. This product is compatible to 4" Dura-Vent Type B gas pipes. For quality and efficiency this wall thimble meets the requirements and has a 25 year warranty.
    Customer Questions & Answers
    2 Questions & 2 Answers
    from Pittsburgh, PA asked:
    September 18, 2015
    Can a 90 degree elbow fit on both sides of this Dura-Vent Type B gas vent wall thimble or do I have to get a straight piece to go through the thimble and then connect the elbows?
    1 Answers
    There would be no way for this to be safe as the distance between the outer diameter of the interior offset and exterior return elbow would need to be 5 1/2". Even if the wall were only 3 1/2", connecting the elbows directly together would provide a distance of only 5.375" and not provide the required 1" clearance. Furthermore, a Cleanout Tee is required for inspection and service at the bottom of the vertical exterior vent run after the vent passes through the thimble.
    Will M.
    on September 18, 2015

    from NY asked:
    August 3, 2013
    I have a wall that is 8", do you make a thimble that will work for that width of a wall? I'm going to use 4" type B pip.
    1 Answers
    This wall thimble has a maximum adjustment of 6 inches, however the thimble can be easily extended with a piece of 26 gauge sheet metal. The metal can be wrapped around the larger end of the thimble collar and screwed or riveted into place. Unfortunately, we do not carry a wall thimble for 4 inch B-vent that is already set up for a thicker wall.
    Collin C. - NFI Master Hearth Professional
    on August 5, 2013

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