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    Superior 8DM 8-Inch Inner Diameter Standard Chimney Venting Pipe for IHP/Superior Woodburning Fireplaces - 12 Inch Length

    List Price: $139.99
    Sale Price: $110.95
    You Save: $29.04 (21%)
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    Product Details
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    Manufacturer: Superior
    Part Number: 12-8DM
    eFireplaceStore Item Number: FSD-12-8DM
    UPC: 043593041142


    • 8 Inch Chimney Pipe
    • Galvanized steel outer shell
    • Stainless steel inner shell
    • 8" pipe = 12-3/8" outside diameter
    • 1" clearance to combustibles is required, unless noted differently
    • Available in a variety of sizes

    *Venting Requirements: This unit requires venting pipe with an inner diameter of 8 Inches. Please see the Venting Components section on this page if available for venting pipe that must be used with this unit.

    IHP/Superior Wood Fireplace 8 Inch x 12 Inch Chimney Pipe. Only IHP/Superior Chimney Wood Fireplace Chimney Liners and Chimney Liner Accessories are approved for use with IHP/Superior Wood Fireplaces. They are UL approved and are not for use with any product other than IHP/Superior Wood Burning Fireplaces.
    Customer Questions & Answers
    12 Questions & 12 Answers
    Curtis W.
    from Virginia asked:
    December 1, 2022
    What determines the size of this pipe, the inner or outer diameter?
    1 Answer
    Chimney pipes such as this 8DM are identified by the inside diameter.  This particular pipe has an 8-inch inside diameter and a 12-3/8-inch outside diameter.
    Submitted by: Tyler M. on December 1, 2022

    Caleb S
    from Pulaski, TN asked:
    March 3, 2022

    Hello, what is the difference between this product: and this one:

    1 Answer
    The 12s-8DM section has strapping installed on the vent component that attaches to framing for additional support for very tall chimneys (over 30 foot). 
    Submitted by: Aaron D. on March 3, 2022

    Chris R
    from Minneapolis, MN asked:
    November 22, 2021
    Would it be acceptable to wrap this pipe with Fire Block Mineral Wool insulation (melting point of 2000 degrees fahrenheit) where this passes thru the attic to help ensure no blown in insulation is displaced against the pipe, as well as to keep any excessive heat away from the surrounding materials?
    1 Answer
    No, this pipe requires at least 1" air space all the way around it.  You can use a firestop spacer or a firestop thimble.
    Submitted by: Tyler M. - NFI Master Hearth Professional on November 22, 2021

    Mike P
    from Washington asked:
    December 6, 2019
    What is the inner dimension? Will an 8" pipe go through this?
    1 Answer
    The inside diameter of this pipe is 8 inches, so, no, another 8-inch pipe will not be able to go through the inside.
    Submitted by: Tyler M. - NFI Master Hearth Professional on December 6, 2019

    from Bascom, Fl. asked:
    November 27, 2018
    What's the trick to getting the 8 in. inside to snap into the other 8 inch?
    1 Answer
    They twist lock together once aligned. You can try some liquid dish soap for lubrication, if needed.
    Submitted by: Owen O. on November 28, 2018

    Kenneth C
    from New York City asked:
    September 25, 2018
    Is this a triple walled chimney pipe?
    1 Answer
    This is double walled chimney pipe with an 8" inner diameter and a 12 3/8" outer diameter.
    Submitted by: Brennan W. on September 25, 2018

    Robert S
    from Grafton, MA asked:
    April 6, 2018
    Can you tell me if this pipe would fit a Majestic WMC42 Series Wood Burning Fireplace Insert? I need to replace a top portion of our existing chimney flue, that goes thru the top of our chase, that is rusting.
    1 Answer
    This chimney section would not be compatible, however, we still offer the SK series chimney your fireplace was listed for use with. A 12" section may be found here.
    Submitted by: Will M. on April 6, 2018

    from Mt.Carroll, IL asked:
    February 14, 2018
    Hello, I have a Majestic model WM425X. I need a pipe coming out for a total of 9ft to the PEAK of a cathedral ceiling .Hard question for me is what to use going through the peak. Roof is ribbed steel, and not leak. I would like to pipe out a couple feet with a cap for now with plans down the road to mason stone around it. Suggestions and/or package?
    1 Answer
    Usually penetration right at the ridge of the roof is avoided if it can be, by using 30 degree offsets to penetrate just to the side (12"-24" from) of the ridge. Majestic only produces that pipe in limited runs a few times a year. We try to keep that in stock as we can. Currently we do have a good supply. Building a stone chase down the road is a very good idea for looks and additional protection from the elements.
    Submitted by: Owen O. on February 14, 2018

    from Agawam Ma. asked:
    January 9, 2018
    Do you offer a roof brace kit for the superior 8 inch (12 " outside dia.) pipe?
    1 Answer
    Unfortunately, no. The reason is because the chimney should be enclosed in an insulated chimney surround once more than 4 or so feet of chimney will be exposed above a roof. Air cooled chimney used with factory built wood fireplaces will offer no insulation itself to keep flue gases warm, which differs from class A chimney used with wood stoves. This type of chimney will have a solid layer of insulation between the inner and secondary wall and longer runs above the roof may be exposed in moderate climates, which is why a roof brace kit will be available. That being said, it appears as though you are in Massachusetts and even a lengthy run of exposed solid-insulated class A chimney would not be recommended.
    Submitted by: Will M. on January 9, 2018

    from Houston, TX asked:
    September 27, 2017
    I am connecting 8" vent ducting to my Superior WRT2036WS insert. Does this part allow me to make that connection?
    1 Answer
    Yes, 8DM pipe from Superior is the correct item for the WRT2036.
    Submitted by: Owen on September 27, 2017

    from Lenox, MI asked:
    February 9, 2016
    Is this FMI/Superior chimney pipe a snap together pipe or do you have to screw it together?
    1 Answer
    These chimney sections attach with lances and hems. When connecting the chimney directly to the fireplace, the inner flue pipe section must be installed first with the lanced side up. The outer pipe section can then be installed over the inner flue pipe section with the hemmed end up. While not necessary to add screws, I recommend using 3 screws around the outer section at each chimney connection for added security.
    Submitted by: Will M. on February 9, 2016

    from OH asked:
    March 13, 2014
    Which end is the hemmed end of the venting pipe?
    1 Answer
    For the FMI 8DM and 8HT piping, the small lances on the inner 8 inch pipe will be facing upward at each connection, while the small lances on the outer 12 1/2 inch pipe will be facing downward at each connection. As such, this will put the hemmed end on the inner pipe facing downward and the hemmed end on the outer pipe facing upward.
    Submitted by: Collin C. - NFI Master Hearth Professional on March 14, 2014

    Customer Reviews
    5 Reviews
    80% (4)
    20% (1)
    0% (0)
    0% (0)
    0% (0)
    100% Recommend this product (5 of 5 responses)
    By John from FL on March 19, 2019
    I would recommend this item to a friend.
    Fit as described
    Perfect fit.
    By Len from California on February 5, 2019
    I would recommend this item to a friend.
    Fit nicely
    Fit nicely on my 30-year-old chimney.
    By Mark from Bonne Terre, MO on December 4, 2018
    I would recommend this item to a friend.
    Perfect size to allow missing structural components.
    Great flexibility!
    By Jean from NM on November 21, 2017
    I would recommend this item to a friend.
    Service and Delivery: Fast!
    This section was as ordered and arrived undamaged - FAST !
    Superior parts snap together and lock - OEM parts: fast.
    By Jim from Fort Mohave on April 8, 2016
    I would recommend this item to a friend.
    Great Service
    What I needed when I wanted it.

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