Can you open a double glazed upvc window?

Hi.
I’m wondering whether you can remove fake plastic leaded light from the middle of a double glazed window? It’s not on the outside.
Thanks
Nikky, July 2023


done
You'd need to take the double glazing unit itself apart. It'd probably be easier and safer to get a new double glazed unit made.
Measure carefully.
At least twice.

Djdjdj, July 2023