46 CFR 78.47-35 - Fire doors.

§ 78.47-35 Fire doors.
(a) All doors in main vertical zone bulkheads or stairway enclosures, except from individual rooms such as staterooms, fan rooms, lockers, etc., shall be numbered conspicuously on an etched plate or equivalent in not less than 3/8 inch letters and figures “F. S. D. 1,” “2,” “3,” etc. If stenciled or similar notice is used, the letters and figures shall be at least 1 inch high. The number shall be conspicuous with the door in the open position.
(b) [Reserved]

Title 46 published on 2014-10-01

no entries appear in the Federal Register after this date.

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United States Code
Presidential Documents

Executive Order ... 12234

Executive Order ... 12777