is the 27. It has the vents along the back (where the compressor is) and just a short distance along the back sides. I have mine in the aft cabin, but I think you would only need an inch or so clearance. I was thinking about using a small computer type fan to move a bit more air around it, but have not gotten to that and it sure seems to work fine without it.

I also removed the handles on mine. But I think if you left the back handle on, that would give you enough clearance.

Greg