you can go to da-lite and they actually have a sequence of questions you go through to find the right screen. The mark up on screens is incredible and to be honest if you have a windowless room, freaking a white wall will look awesome. There is actually a fabric at Joann fabrics that you can get that apparently a lot of people are using. I can\'t do it because my screen is too big, but it might be a good option. I mean heck, if you can save a grand or two here you can dump more money on speakers.