Product review (4 stars): This cap solved a problem with my bathroom vents.
My bathroom vent was old, and had two vents connected to one roof cap. I purchased two of these vents, had them installed, and now my fans move air the way they should. Installation was easy. My only concern is the 1/4 inch size of the vent screens. I wonder if wasps can get into the vent hood and build nests? Otherwise I would give these vents five stars. There are vents similar to this one available at big box stores, but they are not built as well, and need silicon sealant between the vent cap and the roof plate. This unit has the best construction.