Product review (5 stars): Love this vent closure!
I have had this dryer vent closure before and just loved it. During high winds nothing gets in, and some gusts can get to 40 mph. It keeps out insects and when I have to clean the dryer tube it doesn't stop the brush with the gentle bend in the pipe. It is bigger on the outside of the house but that is a small price to pay for the laundry room to be warm during the winter.