Product review (5 stars): Totally Awesome
This is a great product.  I've had two.  One was on the house for 6 years before it got hit with a tree limb and broke and I got another.  It is exactly what it says it is.  Operates easily, easy to clean, doesn't allow pests in and very easy to paint.  Installation can very depending on the opening you have but all in all this is a great option for a dryer vent.