I've just completed installing 13 Infocus LP790 projectors in a couple of restuarants for the HD football season. Now I have problem. These bars produce lots of smoke and dust particles which inturn require me to have these projectors serviced every 1/4....the calculated bill alone for this is about 30 big ones. I'm thinking about creating a Hushbox, although it would be more like a ventilation system, out of plexiglass and liquid nails. The catch is that these projectors are on mounts connected to a 4 ft. pole which drops down from the ceiling. Any ideas, sketches, or suggestions will be helpful. I can't pull air from the current ventalation systems sense it shoots out heat during the winter. I'm thinking about creating a special system just for the projectors using an In-line duct booster fan and a thermostat placed near the projector to pull air in from the restuarant. Naturally there would have to be some sort of filter between the fan and the projector. Any ideas!?