3 points I never ever understood about commercial garage doors: fire doors need annual decrease tests, fusible links melt at established temps

https://zulu-wiki.win/index.php/How_Normal_Evaluations_Improve_Business_Garage_Door_Safety_And_Security_and_Efficiency

3 points I never found out about commercial garage doors: fire doors require annual decline examinations, fusible links melt at established temps, and interconnected alarm systems trigger automatic closing sequences.