StacksVerified U.S. regulatory reference

49 CFR §230.69

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Ash pans shall be securely supported from mud-rings or frames with no part less than 2 1/2 inches above the rail. Their operating mechanism shall be so arranged that they may be safely operated and securely closed.