stainless steel chimney liner

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A 6" liner with 1/2" insulation will usually not fit into a 7 by 7 flue. Lots of times even a bare 6" liner can be a pain to get in depending on how well the liners are lined up and how much mortar is hanging out of the joints.
 
I was told by the stove maker (WS) not to use a 5.5" liner. I measured the narrow dimension and its just about 6.5". I wonder if a 6" liner with no insulaton would even fit, but it seems the best option is to ovalize and insulate properly.
 
Very interesting, Begreen I'm looking hard at this.

Boy is it close. Looks like 6 5/8" - wow is that close. I think that is the max that would possibly fit. This is teasing me with the possibility. I think it's 1/8 over. Darn.


Duraliner.jpg
 
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Download the catalog. The round is 6 5/8" OD. The oval pipe is 7 3/4 x 4 3/4".
 
I saw the oval. I was really hoping to get round pipe to make cleaning easier. Also, my flue enters the smoke chamber at one end so I am concerned it will be hard for oval to make the S bend to the stove.
 
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You can transition to round as soon as it's feasible, but with the double-wall pipe it will not be as flexible as single-wall.
 
That's what I figured, double not as flexible as single.

The other problem is once you transition to round, how the heck do you get an oval brush in there.

I have a sooteater, but sometimes you can't beat a brush for a good quick cleaning.
 
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