Key Code Mount E Blade Where Can I Found A "Lock Box" That Will Fit Over My Wall Mounted Air Conditioner Panel?

Where can I found a "Lock Box" that will fit over my wall mounted air conditioner panel? - key code mount e blade

Our children are constantly changing, the temperature in our panel, AC and we hoped to find some kind of solution to this problem. (No, they say, not to play not only works already). I had hoped that some sort of security on the upper right corner of the panel that the key or access code could be found. Ideas?