Product review (4 stars): Excellent Transition Duct, Tough Clamps
I recently moved into a new house and had to purchase a dryer duct.  I noticed that they were somewhat pricey at my local hardware store, so I took to the Amazon to find a cheaper solution.

This product has served its function marvelously.  I have had it in non-stop use for about 2 months and have had no issues.  It is flexible, which makes to easy to use in a tight space (as long as you make sure that the duct is not being squished in any spots and that the air has a nice clear path to travel out of your house).  It is well enough insulated so that it does not emit heat into the room while the dryer is running the hot air through it.

The set up is where this product lost a star for me.  The clamps that came with it work, however they were quite difficult to get on.  There are other adjustable clamps that you can tighten by hand and I think something like that would have been easier.  The clamps they give you with this duct are sure to give you quite a hand workout, but once you get them on they work like a charm!

I would recommend this item for anyone looking for a dryer duct, as long as they know someone with strong hands to get it clamped :)