Product review (5 stars): Repeat customer!
Great dryer vent.  This is the second one I have bought.  The first one was on our house for near twenty years.  Installing this vent was one of the first exterior upgrades on our new house.  No rattling in the wind and reduces cold air in the dryer.  My installer was so impressed that he is getting one for his house.  If there is a down side, the vent is not available in every store.  No big...order it from AMAZON.