Nice looking design.
couple of suggestions:
- fans blowing front, heat rises and ends up in our intake, I would move the fans to the back
- focus is spelled well as focus not foces
- I'd be concerned about the rigitity of the mounting and also its blocking of the vent you would probbaly need to widen the box at the rear but consider horizontal mounting, this allows direct air flow form the bulb arc
Really nice design, though I might need to borrow a few of these ideas to have a prettier box that the wife would be more willing to have in the living room.
Great job, nice drawing.