Magnetic "Lock" for ZooMed Vivariums

Simple magentic Lock, where Magnets are glued in. Then inner parts are glued to the glass inside and the "L-Form" placed outside to lock everything together.

The Original locking mechanism was broken & I took it out, so the door could swing open freely. I tried to just stick something into the hole that was left in the plastic cover, but that would still allow the upper side of the front glass to be swept open by chance. Since I'm keeping venomous snakes inside, I wanted to make sure. Hence