Except as provided in 50-61-122, it is unlawful to obstruct in any manner any fire exit, or any hallway, corridor, or entranceway leading to a fire exit, required by rules adopted by the department of justice.
Unlawful To Obstruct Fire Exit -- Exception
Mont. Code Ann. § 50-61-106, under General Provisions.
Mont. Code Ann. § 50-61-106