Thank you guys.

I agree Austin I don't see the snakes at all. At the pet store there was all these baby kings really active and climbing the corners of the glass, In my cage they don't do that at all. But mine are older.

I like the idea of substrate depth for snakes. especially for digging snakes. If I put the light bulb outside the cage I think my cats would have eventually knocked it around.

Lets see that prototype bus box cage!