Folding screens have a flexible fabric surface that is snapped or laced to a rigid, four-sided frame. The outer frame of the screen is a single, jointed piece made of lightweight metal that unfolds to form a rectangle of a fixed size. A flexible fabric sheet is then snapped to the frame, and the frame is mounted on collapsible folding legs. Because the surface is a stretched fabric, fast-fold screens are extremely flat, allowing for precision focus of the projected image. These screens are commonly used with a black skirt and side curtains, making it look like a portable theater environment. These foldable setups are capable of much larger image sizes than tripods