The Canon LV-X300ST is our recommended short throw projector. We bought these in bulk and we are passing the savings on to you. Boasting 3000 lumens, 2300:1 contrast, and a 0.61:1 throw ratio, this is a great short throw projector for any 4:3 screen or whiteboard. For those of you with interactive board, it would work for boards in the 77 to 80 inch diagonal range. This is a nice, compact projector so it won’t be a huge box hanging on your wall. Because it is a short throw and not an ultra short throw, it would sit about 3 feet from your wall. We recommend wall mounting this projector to take full advantage of the short throw benefits.