FIRE PROTECTION & LIFE SAFETY DESIGN MANUAL

No display, object or brightly-illuminated signs shall be placed in the line of vision to distract attention from the exit signs. Lettering Each exit sign shall have the word, "EXIT" in plain, legible letters not less than 6 inches (150mm) high, with the principal stroke of letters not less than 3/4 inches (19mm) wide. ................
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