Can you post an image of the result you want and cannot now achieve?
If I understand what you're saying, very few people would ever want this ... so a custom door/window is the answer there. But, perhaps I'm not reading between the lines correctly.
Karl
One of the forum moderators
AC 27 USA and earlier • macOS Ventura 13.6.6, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB