Letter Re: Advice on NBC Air Filtration Systems for Home or Retreat Fallout Shelters

I’m in the process of building a gun vault / safe room and would like to hear your recommendations on a good NBC filter system. Thank you, – M.T.

JWR Replies: By coincidence, SafeCastle (one of our most loyal advertisers) currently has a special sale in progress, for their fallout shelter HEPA air filtration and ventilation systems. They are priced at 30% off, and the sale ends at the end of June. I highly recommend their products.