I recently investigated some fire doors at one of our older buildings and saw they have an FM Approved label on them instead of a common UL Listing. I'm used to the UL listing label which clearly states the fire rating in minutes or hours. The FM label I saw gives some outdated ASTM standards and references a CABO report but doesn't clearly state the fire rating.
Does anyone have experience with the FM Approved fire door labels?
Based on my research, FM stopped approving fire doors a while ago. Thanks in advance.
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