The Manual Series (opens in new tab) (non-electric) projection screen features a professional-grade material that provides uniform brightness over a wide (180°) viewing angle. It comes out of the box fully assembled and requires a minimal effort to install.
This video demonstration (opens in new tab) was filmed at Compton High School with thanks to the AP Human Geography class. It follows the story of an M136XWS1 (136" 1:1 aspect ratio) manual projector screen out of the box and onto the wall and demonstrates how its variable height settings will create a variety of aspect ratios depending on the native format of the projected content.
The Manual series of projection screens come with either a white or black casing and is available in 71" to 170" sizes with a selection of aspect ratios. This includes 1:1 (squared), 4:3 (NTSC), 16:10 (WXGA), 16:9 (HDTV), or 2.35:1 (Widescreen) aspect ratios.