Robust professional quality tripod screens with positive height adjustment Keystone eliminator tilts the screen forward to compensate for distorted images Heavy duty tripod base for extra safety Variable format from square to video or widescreen by simply raising the case on the mast 240(cm) version rotates on mast Black vertical borders, black case & top bar create a visual frame to your image Durable matte white screen material is washable Choice of sizes 1 year warranty