Quick overview from the supplier:
Ceiling/Wall Mount Reflecta, "TAPA" Universal White, 430-650mm, max.load 20kg, 23054
Projector tiltable at each side 10° and front side 20°. Possibility for easy changing of height (430 – 650 mm) and slope of projector. Universal projector plate, tool kit and screws for changing the height are included. For all types of Data Video Projectors.
