Projecting-screens are normally hanging vertical, but can also be tilted in an angle within the limitation of the projectors keystone-correction. All projecting-screens are best, when the light is projected in angle of 90° to the screen-surface.

Screens can be installed like any other acrylic sheet by any carpenter, using normal tools, like a window in a frame.
How ever, since the thermal expansion of diffusion-screens is similar to acrylic (0,08 mm/m/°C) a little space is required for expansion/shrinking in environments where temperature can variat, if fixed (e.g. in a frame).