The gelatin emulsions on films and prints are subject to damage well below these standards. Therefore, such storage devices may not provide protection for photographic materials over the stated temperature ranges or conditions. Similarly, heat can cause the gelatin surface of photographic materials to soften so that it is still subject to damage through melting, embossing or impressions in the surface, digs and pick-off, adhesion to other surfaces, etc. Keep the lower tolerance of photographic materials for such temperatures in mind when selecting or designing fire resistant storage facilities. Similarly, your expectations for films and photographic papers surviving a fire should be based on these considerations.
Prevention is still the best protection.
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