This worked well in our office- we put it on ...

This worked well in our office- we put it on our office door that was made of metal. It did need caulking or latex around the edges to stop the air from coming in from the outside. Also, the back where the key opens the box is a little loose- so it almost doesn't close all the way. It's still secure since you cant open it all the way or stick anything in there but be aware. We would have returned it but needed it ASAP so we went with it.

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