Not just for doors, these can slip onto rear-view mirrors for parking permits, onto shelves with sale items, or onto machines undergoing lock-out tag-out procedures.
Hangtag templates (PDF)
"Empire met with engineers at the company and inspected the damaged
labels to determine the root of the problem. Empire then evaluated
several materials for stability and durability, as well as for compliance
with evolving health and safety standards. The team produced
samples for testing and after rigorous evaluation to ensure they
would maintain their form and function, the customer approved the
new label, which is now the standard for this expanding line of
safety gear."
— Ergodyne case study
