Product review (5 stars): Like many others
I gave it five stars because it was just as I expected. Like many others, the fact that you can open the louvers to clean inside is a big plus. The mounting holes did not line up with places on my bricks where it would have been easy to install screws so I had to drill new mounting holes. I expected that so no big deal. I do wish they would have included a fitted bit of flashing to fit on the inside of the wall where the duct comes out.