I went for a training course at BWCA (ionics) the guy there said it was designed for commercial to begin with too.
Yes you are right sb cleaning!
i know what you are saying that a window is a window but on commercial it is different glass that is used to that of domestic houses, that`s why there was so many issues using wfp on domestics because it was not designed for it, thats why you don`t get the same issues with commercial glass!