StacksVerified U.S. regulatory reference

46 CFR §131.825

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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 2 inches high: “[CARBON DIOXIDE/HALON/CLEAN AGENT] FIRE APPARATUS”, as appropriate.