Product review (3 stars): Will probably (hopefully) do the job
Bought this to tie a couple of bathroom exhaust fans to a PVC wye for exiting out the roof.  It's pretty flimsy material and I even ripped the end a couple of times as I tried to stick it on the exhaust port of one of the fans.  The fan has a goofy notch in the end that the plastic hose tore pretty easily on.  I just cut the end off and tried again til it went on without ripping.  I should add that the exhaust ports were in an awkward spot so that may have had something to do with it, but the plastic on the hose definitely still is on the thin side.  Since I don't hang out in the attic much I expect the susceptibility to damage will be pretty low so it should be okay.

The only other thing is the odor when you open the bag is pretty potent.  It's about the same smell you get when you open a can of PVC glue - only stronger.  I didn't notice it seeping into the bathroom after the project was finished so I guess it's a temporary problem for people using this in places like attics or inside walls.