Screen Size for a RoomEnter how far the back and front rows sit and what people will look at. Get the screen size the room really needs, where to mount it, the ceiling and viewing-angle checks and the projector throw, on a live section and plan.

Distances are measured from the screen. Front row half-width: from the room centre line to the outer seat of the front row. Throw ratio is in the projector's data sheet (short throw about 0.5, standard 1.2 to 2.0). Displays are sized by their diagonal in inches.