3 points I never knew about commercial garage doors: security stickers and placards are code things

https://sierra-wiki.win/index.php/Exactly_How_to_Identify_Early_Indication_Your_Commercial_Garage_Door_Requirements_Repair

3 points I never understood about commercial garage doors: safety decals and placards are code things, yearly training minimizes occurrences, and lockout-tagout factors need to be recorded for crews.