I have a full size double-pane all-glass patio door that I'd like to put a hole in for an air conditioner exhaust hose. I plan to drill a hole with a glass drill bit and then use a carbide rod saw to saw out the 5" diameter hole. I realize this will be a pain in the butt but there are no other places in the apartment I can cut the hole.
How likely is this door (or one like it) to be made of tempered glass? It looks to be at least 10 years old. Not sure how common tempered glass is in these kinds of applications. The apartment isn't really well-built.
The glass is SGG Climalit. I can't find one shred of contact info on their web site to ask them, though it looks like they do offer tempered glass options. This is in Spain. https://www.climalit.es/