46 C.F.R. § 131.825 Controls of fire-extinguishing system.
Title 46 - Shipping
Each control cabinet or space containing a valve or manifold for a fire extinguishing system must be distinctly marked in conspicuous red letters at least 50 millimeters (2 inches) high that state the following: “FIRE APPARATUS FOR [CARBON DIOXIDE] [HALON]”.
Title 46: Shipping
PART 131—OPERATIONS
Subpart H—Markings for Fire Equipment and Emergency Equipment
§ 131.825 Controls of fire-extinguishing system.
