Product review (4 stars): Very good product
This is a good quality product.  I had some minor difficulty installing because the holes on the flange did not match up with the mortar cracks in the brick foundation.  Other holes can be drilled in the flange, just be prepared to drill holes in whatever wall this is to be mounted.  I painted after installation with a brush and latex paint as recommended.  I still wonder if a good quality spray paint applied before installation would have made more sense.  Works great.  We'll see how cold the dryer gets come winter!