{"data":{"id":"us/46-cfr-131.899","jurisdiction":"us","citation":"46 CFR 131.899","heading":"Fire dampers.","body":"Each fire damper installed within the boundary of a space protected by a fixed fire extinguishing system must be fitted with an indicator showing whether the damper is open or closed and must be marked with red letters at least 13 millimeters ( 1/2-inch) high stating “FIRE DAMPER” and, as otherwise appropriate, identifying the space served by the fire damper.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER L—OFFSHORE SUPPLY VESSELS","PART 131—OPERATIONS","Subpart H—Markings for Fire Equipment and Emergency Equipment"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"f652b5f306471065613003968862e2534152a409fc6c7271253fb2c70420cf4e","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-131.896","next":"us/46-cfr-131.905"},"notice":"GroundRules: Original legal text. Not legal advice."}