Any ideas what these signs on this building mean?

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Any ideas what these signs on this building mean?

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dohpaz42 to

Asklemmy@lemmy.mlEnglish • 6 days ago

Aside of these signs and the address numbers, the building is completely unmarked.

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@AbouBenAdhem@lemmy.world
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50•6 days ago
They’re NFPA 704 signs.
- dohpaz42OP
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  13•6 days ago
  Thank you!

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