By Ken from Tuscaloosa, AL on February 28, 2013
What gauge metal is used on the inner and outer pipe?
By Collin C. - NFI Master Hearth Professional on March 1, 2013
Answer:The FMI 8DM piping system uses a 30 gauge stainless steel inner liner and a 28 gauge galvanized steel outer casing.
By John from Delran, NJ on November 22, 2015
Is this material of this 8 inch diameter chimney venting pipe for FMI/Superior woodburning fireplaces similar to the Selkirk model SS IIType HT,with twist locking in place?
By eFireplaceStore on November 23, 2015
Answer:It is not. This pipe series uses snap lock lances that lock to the pipe hem before it. Once locked, they cannot be separated again without damaging the pipe to some extent.
By Lou from Millville, NJ on August 30, 2013
Does this product come in a triple wall?
By Tyler M. - NFI Certified Specialist on September 3, 2013
Answer:Unfortunately, no, FMI only makes their class A chimney pipe in a double-wall, air-cooled style. This particular pipe has an 8" inner diameter and a 12 3/8" outer diameter.
By Vladimir from Southampton, NY on October 15, 2014
I have a chimney which is made of FSD-48-8DM pipes. I need two 45 degree elbows to change the chimney position on the roof. Is there anyway you can provide me with the proper item number?
By eFireplaceStore on October 15, 2014
By Mariano from Clearwater, FL on June 12, 2013
I am building a firewood dome-shaped oven with an inner dome diameter of 29". The wall is going to be 10" thick and the top inner height of the dome is 17". The opening of the door is 15" by 10" height and the door will be arched. In front of this arch I am planning to build a second arch and install the chimney between these two arches. What is the minimum measurement for my chimney and outer and inner diameter? Can I mount the chimney on standard flute 8x8"?
By Collin C. - NFI Master Hearth Professional on June 13, 2013
Answer:I appreciate the detail of your proposed oven. The general rule of thumb is to have 1 square inch of flue size for every 10 square inches of door opening. You can deviate slightly from this measurement, but it is recommended to stay as close as possible.
Based on your proposed door size, an 8 x 8 clay flue will be too large and the oven will draft poorly. Realistically, a 5 inch metal chimney flue would be the closest fit, as it has a 19 square inch area. Your oven needs a 15 square inch flue to be perfect. If a clay flue tile measuring 4 x 4 exists, this would be a better option. However, I have not seen a flue tile this small before.
By Brian from Kansas on January 18, 2017
What is the approximate weight of (1) piece of 8" FMI chimney pipe?
By Will M. on January 18, 2017
Answer:One 48" section weighs 14.9 pounds.
By B from Vermont on November 14, 2016
I have 8-FS stove pipe with my Superior fireplace. Is the 8DM compatible?
By Chris from Cleveland, OH on April 28, 2017
Does this pipe work with a B36 Desa fireplace? I have this unit and need piping. The manual calls out this same pipe, see attached picture.
By Will M. on April 28, 2017
Answer:This will absolutely work with your fireplace, based on the image of the product manual you've provided.
By mark tripp from Rumford, Maine on September 27, 2012
I have a DESA fireplace that calls for the same part number as this piece of pipe. Did FMI buy out DESA? Will this pipe work?
By Tyler M. - Fireplace Specialist on September 28, 2012
Answer:Yes, this 8" inner diameter and 12 3/8" outer diameter double-wall pipe is indeed compatible with DESA models that call for "8DM" pipe.
DESA was the parent company of FMI and Vantage Hearth products for some time. DESA has since declared bankruptcy, but FMI and Vantage Hearth have reformed and continue to operate independently. The current FMI line of piping did not change and will fit all DESA, FMI, and Vantage Hearth wood burning fireplaces.
By David from Harwood, TX on May 12, 2016
What size screws are needed to assemble/connect these pipes?
By Seth on May 12, 2016
Answer:No screws are needed to connect the 8DM pipe together. They fit together using a snap lock connection.
By Jeff from Ozark, MO on January 26, 2015
What is the recommended clearance from a combustible wall if I use the double wall or triple wall pipe? I have a FMI B36-L fireplace but I am not sure what piping to use. What would you suggest?
By Tyler M. on January 26, 2015
Answer:Your FMI B36L fireplace requires the use of this 8DM double-wall chimney pipe; there is no option to use triple-wall pipe. This 8DM pipe has an inside diameter of 8" and an outside diameter of 12 3/8", and there is a 2" clearance required to combustibles around the outer pipe.
By Dale from Ohio on October 21, 2013
What chimney cap goes with this product?
By Collin C. - NFI Master Hearth Professional on October 22, 2013
By Bill from NJ on October 30, 2015
I have a Stylecrest Vexar model C36EMW that I would like to install. The manual says that it uses a 12 3/8 inch OD/8 inch ID snap lock double-walled pipe for venting. Will this 8 inch diameter chimney venting FMI/Superior woodburning fireplace pipe you sell work with it?
By Tyler M. on October 30, 2015
Answer:Yes, this 8DM FMI/Superior chimney is indeed compatible with the C36EMW model.