Firstly, apologies if this post appears elsewhere. I thought I posted it earlier this evening, but now can't find it using this tiny Blackberry screen! I intend on recessing a Samsung PS42Q97HDX 42" plasma into a wall so the screen is flush. Achieving this by extending a chimney breast into the room by increasing the plasterboard gap. Can anyone give me an idea as to the sort of gap I should leave around the edge of the TV for heat ventilation? Thanks. Ian.