Product review (5 stars): Definitely Use This Duct for a Sturdy, Efficient, and Safe Dryer Installation
This was duct was used by the installer that delivered and installed my new dryer.  I ordered in advance of his arrival so it was on hand for the installation.  It was much better quality than the default duct that is normally used.  It was sturdy, and yet flexible enough to install the dryer close to the wall and allowed maximum dryer exhaust flow.  The installer liked it a lot and asked were I got it.  He had no problem doing the connections.  It had all the necessary clamps.  It's all metal.  The only thing better than this solution would be solid metal duct installation.