Latches, or Glass door locks?

I'm starting to build my enclosures for the AfRocks. I decided to go with plastic instead of wood this time. I can't seem to find anyplace that would carry some type of glass door lock I can fix to the door like the display cages most have, or find a latch to keep the door closed. I need something strong because these are strong boids....anyone know where I can find them? I'd prefer something key lock style, rather than a simple turn style latch for safety reasons. Any help would be appreciated :D