I don’t understand your question. My idea is to have the OSSC add pillarboxing, not windowboxing. As is, when the OSSC is outputs 720×480, my monitor can display that in either 3:2 or 16:9. The image needs a bit more pillarboxing than the display can add to get to 4:3. I’ve already tried buying a new monitor with proper aspect control built in three times now, and every time there’s been something wrong with it and I ended up having to return it. It’s very frustrating. Only a handful of brands offer that functionality in monitors, so there’s not a lot of options there anyways.