I have a client who uses a 'disposable' pull down screen which has a couple hooks on a fence to mount on. It is easy to pop back into the housing and take inside when not in use. The projector turns around to shoot out a window from the inside and he refocuses the lens, whole process takes about three minutes. Inside he has a 95 inch firehawk, outside a 140inch studiotech 130, works great. I made a contact closure that closes when the projector is turned to the outside, this is hooked up to a switcher that switches the audio to surround outdoor, some rock speakers as fronts (by the fence) and some soffit speakers as rears. Tsu6000 and rfx6000 to control it all. It's cool.