By Adam from Seattle, WA on May 11, 2015
What are the full dimensions of the anchor plate in this DuraTech All-Fuel chimney pipe masonry and zero-clearance anchor plate? Is it 12"x12"?
By Brennan W. on May 12, 2015
Answer:This anchor plate is indeed 12" x 12".
By Mike from VA on February 21, 2016
This plate is 12"x12", so it's the best size for me to work with. Does it work with Duravent products, or just DuraTech? The Duravent plates are larger and I have a brick facade that takes about 12"x12".
By eFireplaceStore on February 22, 2016
Answer:This plate will work with only the Duratech product line, as it is dedicated to that double-walled product. Duravent is the manufacturer and they offer many different series of piping.
By Rolfe from Dundas, MN on July 14, 2013
The existing insulated chimney pipe has been corroded from the roof all the way down to the fireplace. It currently has a class A fireplace insert with a 6 inch opening that has been inserted into a standard open fireplace to reduce the amount of back draft that came into the cabin, which might have been caused by a flue that was too large for the fireplace. Can we reduce the flue's inner diameter to get more draft effect out of the flue? Do you have an insulated reducing collar that we could screw into our 10 inch anchor plate that would reduce it to an 8 inch diameter? Can we then attach a new 8 inch Class A insulated chimney pipe? If not, what should we do?
By Collin C. - NFI Master Hearth Professional on July 15, 2013
Answer:Based on what you have described, I agree that the primary issue was oversizing of the pipe. It appears the insert was simply pushed into the masonry enclosure and is passively drafting into the 10 inch pipe. If the insert does indeed have an 6 inch outlet, oversizing by more than 1 inch can cause poor drafting, especially in a climate as cold as yours.
Because of conflicts with product listings and safety, no adapters exist to change the diameter of Class A chimney pipe. Moreover, the anchor plate that is currently there is designed to work with one particular brand. If an adapter did exist, it may be difficult to determine whether or not it would work with the anchor plate.
I believe it would be in your best interest to chisel out the existing plate and replace it with a new 6 or 7 inch plate. The top masonry enclosure is most likely made from castable refractory cement, which can be chiseled out without too much effort. The new plate can be installed and more castable cement can be used to affix it into position.
By Gary from Walla Walla, WA on June 3, 2013
On the Part 9641 drawing what is the dimension of "C", the outer most dimension?
On Part 9649, what is the difference between the DSA part and the non-DSA part?
By Collin C. - NFI Master Hearth Professional on June 4, 2013
Dimension C for part number 9641 measures 12 inches. As for part 9649 (the DuraTech 8" roof flashing
, the DSA part is made of dead-soft aluminum and is flashing designed for metal roofs. The high malleability will allow the flashing to conform to corrugations and ridges commonly found on tin roofs. The non DSA flashing is manufactured from tougher galvanized aluminum. It is the recommended flashing for shingle and otherwise totally flat roofs.