StacksVerified U.S. regulatory reference

46 CFR §196.37-13

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The control cabinets or spaces containing valves, manifolds, or controls for the various fire extinguishing systems must be marked in conspicuous red letters at least 2 inches high: “[CARBON DIOXIDE/CLEAN AGENT/FOAM—as appropriate] FIRE APPARATUS.”.