Smooth Bellows
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It's 3" in/out, and its 4" long. Fernco part number is 1056-33. And here's a picture of it, you can see it in the background


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I have a fernco but I trimmed it and used a hair dryer to make it fit. It was bothering me that it didnt go flush against the MAF at first. now it does.
I tried to get a Fernco Sunday doing my 90/90 install. The 4x4 was too big, they didn't have a 3x3 in stock, the 4x3 looked like it was a hair big for the TB (4" end) but not near as oversized as the 4x4.


i didnt do any trimming... just popped it on 


