StacksVerified U.S. regulatory reference

46 CFR §95.16-40

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
If a space or enclosure containing extinguishing agent supply or controls is lockable, a key to the space or enclosure must be in a break glass type box conspicuously located adjacent to the opening.