I got a Sanyo XP21N projector and decided to ceiling mount it. I knocked a hole in the ceiling and built an enclosure for the projector to mount to that: 1. Ducts the projector exhaust up into the attic. 2. Covers the projector (for noise reduction) without blocking the entry of room air for cooling. All turned out very nice except that I put a temperature probe into the exhaust duct and it got up to 131 degrees (F). The air flow appeared to be as strong as when the projector just runs on an unobstructed table. I'm concerned if that temperature could catch something on fire, being that the enclosure is mostly wood with paint and foam soundproofing. Is this safe or am I really doing something dumb here?