Product review (5 stars): Easy Energy Savings
This product solved a serious air leak in my home.  When I moved the dryer for repainting I noticed that cold air was pouring into the house.  Previously I had noticed that the inside of the dryer was cold when opening it to insert clothes.  The heartland vent was easy to install (5 minutes) and the air infiltration problem through the dryer vent solved.  I painted the vents to match the house exterior.  This is not just for aesthetics, because they are made of plastic they will become brittle and fail after time unless they are painted.  Very happy with the product.