Product review (5 stars): Nice product.  Does the job!
It was easy to install.  My washer/dryer is upstairs on the second floor.  After installing it 2 days ago, i do notice the laundry area is not as cold anymore. Nice little product.  Defin. worth the money.

Since i bought this to replace a different vent closure (basic one with the flaps), the holes for the screws were in a different spot.  Instead of filling the holes on my shingles from the old vent and drilling new ones, i just drilled new holes directly on the heartland to match where the old ones were.