Quick and easy to use in the event of an emergency lockdown! Strong, heavy-duty magnets are encased completely in sturdy plastic. Assorted bicolor design. Measure 2"L x 1"W x .50"T each. Set of 40.
How to use:
Open the door. Place a magnet on each door's lock plate or steel frame. Leave the magnet there at all times.
Keep the door locked and open. (In non-emergencies, the magnet prevents the door from shutting and locking anyone out.)
In the event of a lockdown, simply remove the magnet and shut the door. It will lock immediately.