Storage for Your Valuable 3-1/4" x 4"
Electron Microscopy Films
Identical in dimensions and construction to our
  micro-slide and 35mm slide cabinets, our electron microscopy film cabinets offer economical, efficient and safe storage for your electron microscopy films.
Stackable with all other 15-3/4" width cabinets
  in the Paragon system. You can intermix cabinets in one stack and minimize space requirements.