I am kitting out a room for projector in conjunction with my builder and today we discovered what we will call a "small" cock up. He has built a box into the chimney breast to house the projector but we assumed he knew that this should be centred. It turned out this was not possible as there was not a big enough void behind there. Net result off centre mounting of the projector ! I don't think this is going to work but before we block up the hole and build a shelf I thought I'd consult here. The projector in question is likely to be a Domino H20. It is a 7" screen and we are projecting from 16" way (approx 5.3m). Now the centre of the box is 50cm off centre and I think if I mounted the projector on the box ceiling I could get the lens to be ~35cm off centre. This is about 6degrees or so projection angle. Now I believe the H20 has no horizontal keystone correction is 6degrees tolerable or should I bite the bullet and get it right ! BTW its not just the hassle of doing this again having the projector recessed was a real selling point to the wife !