Hi, Just after a bit of advice please. A customer has asked for a projector fitting in their school hall. It will hold approx. 300+ junior school children. The throw distance would be 11.5m with a diagonal of about 3m. I have been advised on a Optoma EP781. Would this projector work if I projected the image through glass from a room behind. Or, would it cause too much reflection or excessively distort the image Please let me know if any more details are required Thanks for any help received Gareth