Flex duct used for exhasut flue.

Specific Inspection Topics Inspecting HVAC Systems
1

Never seen flex duct used as a flue. Strait runs of ductwork were type b.
Flex duct ? rated?

nachi.jpg

nachi.jpg

2

Looks like flexible B-vent to me. . .

The label on the flex will indicate it’s type, but this looks okay to me.

3

Never seen flex before used at this application. The flex had no label. Does anybody have links to manufacturer site or technical info?
Thanks Jeffrey for the reply.

4

http://www.mtlfab.com/media/l1940.pdf

5

James;

Try this one.

http://www.mtlfab.com/media/l1940.pdf

Hope this helps.

Marcel :slight_smile: :slight_smile:

6

Is this product related to what is used for chimney liners sometimes. Thanks for the product literature.

7

http://www.hartshearth.com/chimney/flexibleliner.htm

Different design.

Marcel:) :slight_smile:

8

It’s labeled at its connector, near the furnace. . .

9

Thanks everyone, good info.

10

I ran into this the other day and got on here to check on it. I’d not seen this used before. Good information. Thanks everyone. :wink:

11

Obviously, you knew before we found out what it was, didn’t you?
You wise cat. ha. ha. :wink:

Marcel :slight_smile: :smiley:

12

I see this stuff all of the time. . .

But it shouldn’t be confused with this garbage. . .

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P4050010.JPG