StacksVerified U.S. regulatory reference

30 CFR §7.25

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A sample of each batch or lot of brattice cloth and ventilation tubing shall be flame tested or a sample of each batch or lot of the materials that contribute to the flame-resistance characteristic shall be inspected or tested to ensure that the finished product will meet the flame-resistance test.