Thanks Trumpy,

I am concerned about the heat build-up around the can itself and the hole (which will be a snug fit) in the fiberglass. I guess the fiberglass will be exposed to the outer surface of the can and the heat there. But wouldn't the smae situation exist with an IC-rated light can too? The hole has to be fit snug (not allowing 3" clearance)

The issue of insulation and ventilation is moot . . . this is a non-standard ceiling tile application for a sound studio. The ceiling tile array will not actually extend to the edges of the room and there will not be insulation above it . . . so plenty of air up there. The real ceiling is 5/8" fire-rated gypsum board which will be 2.5" from top of can.

So the concern seems to be the contact of can housing with fiberglass tile . . . any thoughts?

I saw what the tile did under a blue flame. I think it would be fine from the heat of a can (I could even use low watt bulbs) . . . but I'm not a pro.

Thanks,m
Mike