Product review (4 stars): After a lot of trial and error it was perfect. This beat making a new vent hole in ...
Did the job, but took a lot of customizing. Had to cut the length and used plenty of aluminium foil tape to completely seal the vent seams. After a lot of trial and error it was perfect. This beat making a new vent hole in the exterior wall and then closing the existing hole. Thank goodness for the product.