Built two tub rack, have questions about if escape is possible

[AF4]

I just built this rack, eventually hold two tubs, these are 35QT tubs. The heating is nothing more than UTH on themostat right now, I might move over to the flexwatt setup eventually. My questions is about the lip in the tub, which I've taken a picture of, I'm not sure if my ball python can or cannot escape out. I know once he grows a bit, it won't be an issue, but I'm curious if he can even attempt to fit through that area. Other than that, the tub is pretty secure, it's a nice snug fit. Open to opinions of course, thanks!

[BallPython17]

I doubt he can get threw that. But you never know. But what he might be able to do is push the tub out. Try to put like a stopper so that the tub cant be pushed open by the snake.

[ChicaPiton519]

if you are that worried about it slide some cardboard under the tub,
his head may be able to fit but i worried about the same thing with mine, it should be fine =]

[AF4]

Thanks a lot! I really appreciate the input!