Most ultra-short throw projectors despite claiming they can go up
to a certain size, if they have a focus adjustment should be able to adjust the
picture to 103” (if a 100” UST projector) or 123” (if a 120” UST projector) and
fill in the entire screen area. In some cases, certain UST projectors that have
a fixed focus lens can go up to 103” and 123” with minimal impact on the
picture and allowing to fill in the screen size.