When I’m teaching about the code-compliant ways to hold open a fire door, I always say that my preference is to use a wall-mounted magnetic holder because there are no moving parts, and not much can go wrong if it’s installed correctly.  But if there’s no power to the magnetic holder, it won’t hold the door open.  And if the door won’t stay open, someone will always come along with a creative solution.

This photo came from Chad Jenkins of the National Locksmithing Institute.

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