Pop door lock?

[Malkaris]

When the door is closed should be plenty of room?
Course were still waiting for this :

Sorry people - got pics and then broke my screen before I got around to uploading and it was a whole big thing.

I'll take new pics, but for now I'll say I got these "L" shaped things that screw into the sides that hold the pop door. At night I slide it across the top, and I have a clip outside the run to attach it so it can't be slid back out.