Very true. 7m diagonal. But a 77 inch tv placed into a right angle corner facing into a room will be at least 1 metre away from the wall. So unless you are sat on a stool in the opposite corner 17 feet would be a struggle. I’m not sure what is going on with uploading of images at the moment. I’ve made a couple of changes so it may work now, if not log in and it will work. If you need me to send you a new login – just ask.