I'm trying to figure out how to take these windows out of the frame for cleaning. I asked the landlord and he also doesn't know how that's done.
The windows consist of two panes that slide up and down in tracks. When closed the panes can be locked against each other in the middle.
I searched online but couldn't find anything, and I tried pretty much everything that didn't require excessive force to get them out.
Is this a standard window type with a well-known way to take them out?