They ARE light tight. I can't speak for watertight. Bob On Feb 18, 2012 9:31 AM, "shannon Stoney" <shannonstoney@xxxxxxxxxxxxxxx> wrote: > I'm building a small outbuilding for my new darkroom. I am planning to use > light tight louvered vents that you can buy pre-manufactured, from BH > photovideo or Adorama. My contractor is worried that these won't be truly > light tight or water proof: he thinks that rain will come through them, or > that they might not be really light-tight. I was thinking they could go on > the south exterior wall of the building under the eaves, but he thinks they > should draw air from a little vestibule where they can be protected from > weather. The one I have now IS protected from weather in that way, but I > didn't think that it had to be. > > Does anybody have any experience with whether these plastic vents are > truly light tight and water tight when they're on the exterior of a > building? > > Thanks. > > --shannonTo unsubscribe from this list, go to www.freelists.org and logon > to your account (the same e-mail address and password you set-up when you > subscribed,) and unsubscribe from there. >