Product review (5 stars): Good buy for the money.
Does what it is supposed to. Very easy to install as I had an existing dryer opening in place. Fit perfectly, weather sealed the outside and voila! Has an inner flap that keeps out cool air and opens when dryer is in use. Critter cage blocks anything from coming in the bottom.  Tin is thin and can be cut if needed. This fit my home which is brick on cinder block, perfectly.