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    Fireplace and Stove Gas Vent Pipes

    Your gas fireplace or stove is a valuable part of your home and keeping it working at an optimal level is essential to its functioning longevity as well as your home's energy efficiency! Believe it or not, your seemingly unimportant gas vent pipe is an integral part of your appliance and installing the correct one will help your appliance's long-term health and energy efficiency. For example, the 5 Inch Inside Diameter FMI/Superior Double Wall Direct Vent Chimney Pipe will increase the efficiency of your fireplace through its intelligent use of a double wall. This galvanized venting pipe conveniently comes in a variety of sizes and is specially designed for use with FMI/Superior direct vent model fireplaces. has an enormous selection of fireplace vent pipes and we want to make sure you buy the best pipe for your situation.
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    Ask & Answer
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    9 Questions & 9 Answers
    from CA asked:
    March 3, 2017
    Do you have available venting products for my gas fireplace? It's a Majestic Vermont Castings, ng, model 33bdvr rn. There are pictures attached with additional information.
    1 Answer
    The original vent components for this model have been discontinued and are no longer available. Special orders are available.
    Will M.
    on March 3, 2017

    from St. Petersburg, FL asked:
    February 28, 2017
    I am looking for a 3REA45 gas vent pipe.
    1 Answer
    Unfortunately, we do not offer any Hart & Cooley venting.
    Will M.
    on February 28, 2017

    Harry A. Goodman
    from Oswego, Illinois asked:
    December 30, 2016
    I have a Superior/Vantage Hearth VVC36 Performance Series Direct Vent Natural Gas Fireplace with Ceramic Logs and Refractory Brick Interior - 36 Inch. During medium to high wind conditions the flame goes out, and I have to relight the pilot. It then typically continues to go out multiple times. Are there any solutions to this?
    1 Answer
    You can try a high wind vent cap.
    on December 30, 2016

    from Dallas, TX asked:
    October 29, 2015
    For your Vantage Hearth SUP-BRT4536TMN gas unit, or similar unit, I need to offset below the ceiling level. What is the minimum distance above the vent collar that can I offset the Type B vent and maintain proper performance and venting?
    1 Answer
    This model will utilize a 13.5" transition collar right off of the top of the unit before the connection to a 6" B Vent system is made. I would suggest at least a 3' rise from the top of the fireplace before any offset is made.
    Chris C.
    on October 29, 2015

    from Strafford, Vermont asked:
    October 26, 2013
    Can I use regular galvanized 4" stove pipe inside of a regular 6" stove pipe for a propane direct vent gas log stove, with the joints and seams sealed with furnace cement? It is a straight 14' vertical chimney.
    1 Answer
    That will depend upon the manufacturer of the stove. It is not a problem to use the galvanized pipe on the outer wall in most cases, but the diameter is important. Some stoves have a low enough condensing point that the galvanized pipe cannot be used on the inner wall, as the galvanization will be rapidly compromised by the constant presence of moisture. B-vent piping usually can be used in this case. I recommend checking the owner's manual for the stove to be certain of what is acceptable.
    Collin C. - NFI Master Hearth Professional
    on October 28, 2013

    from Denver, CO asked:
    October 26, 2013
    Could I convert an old wood burning stove into a gas log burning stove?
    1 Answer
    This sort of renovation is a bit unorthodox. However, we have had a few customers perform this modification successfully. Is your stove a full bodied cast iron appliance? A hole will need to be drilled through the body of the stove for the gas line. Also, the door of the stove will need to be removed for fixed permanently fully open to provide for adequate combustion air the log set. To properly size a log set to your stove, full interior dimensions are required. These include front width, rear width, depth and height.
    Kevin E. - NFI Certified Specialist
    on October 27, 2013

    from Hurlock, MD asked:
    September 21, 2013
    I am replacing a direct vent propane fireplace with an Empire propane direct vent unit that uses a 4 inch inner double wall exhaust pipe. There is a roof truss above the unit. I need to offset the exhaust 2 inches to miss the roof truss. Is there flexible double wall pipe I can use?
    1 Answer
    Yes, Empire does make flexible vent kits for its direct vent gas fireplaces. If you want a full quote, please reply with the model number of the fireplace that interests you most. Also, please advise how much pipe you need to get to your roof, as well as your roof's pitch measurement, and we can provide a quote.
    Tyler M. - NFI Certified Specialist
    on September 23, 2013

    from Bastrop, Tx asked:
    March 1, 2013
    Is there any cover or damper for a direct vent that goes through the wall when not in use?
    1 Answer
    Direct vent fireplace venting systems remain open to the outdoors at all times. This is also the case with B-vent fireplaces. Most units have a built in draft diverter that is designed to eliminate cold back drafts into the unit.
    Collin C. - NFI Master Hearth Professional
    on March 1, 2013

    from Seattle asked:
    January 21, 2013
    I need an adapter that increases from a 4 x 6 5/8 direct vent pipe to a 5 x 8 direct vent pipe.
    1 Answer
    We do not offer a stock piece that makes this conversion, but if you reply with your fireplace model and piping information, we will be happy to research available options for this purpose, if applicable.
    Tyler M. - Fireplace Specialist
    on January 21, 2013

    Our Chimney Pipe Buying Guide was written with the customer in mind to simplify things as well as to help you confidently purchase the best fireplace exhaust pipe for your appliance. If you are at all unsure about the installation process, has some helpful resources. The Direct Vent Chimney Pipe Installation Guide and the Type B Vent Pipe Installation Guide explain the installation process clearly and succinctly. Both guides have helpful pictures and charts. Of course, if you have any questions at all, you can ask one of our knowledgeable specialists from, and they will be happy to help in a timely manner in any way that they can do so. is a one place stop for all your fireplace needs at prices that will fit any budget. Start browsing our selection today!
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