Please be extremely careful using duct tape in a snake's enclosure. I've unfortunately read more than one thread about snake's managing to undo some of it and get tangled up. Trying to remove them safely from that stuff is apparently very difficult and in some cases the snake just didn't make it. Maybe for now an alternative until you find a glazier is getting a piece of heavy pegboard (like some handymen use to store tools on walls with). If it was cut to fit very snugly it might have enough "bend" in it to pop it right into the runners from the glass door. It isn't pretty but it might do and it does have small holes that would allow air circulation....just a thought as I'm not sure if that might be an interm solution.

~~Joanna~~