Hello, we are not building a balcony at the start on the upper floor, where the future balcony will be, first two 60x130 windows will be installed, I have seen some kind of "blindplåt" that functions as a frame in the size that the balcony doors will constitute in the future, that way you avoid having to cut the panel and other things later and just lift out the entire frame so to speak, what is that called?
