jay8 I have thought and used the 2x4 method before. The biggest problem seems to be that with the H36ICAT housings that we are using, the width of the nailing flange on the arms seems to be too wide. These vapour hats are not true square in the corners. They have a curve to them and thus dont allow for proper extension and mounting of the arms. I really am baffled as to why this would be as both products are made by cooper and should be compatable.
mikesh The housings that we are using are air tite with complete gaskets. I'm not sure if its just our builder, our company or new building code that is requiring the doubling up with the vapor hats over "sealed" housings.
