YABER Pro V9 Manual De Instrucciones página 13

Distance (ft.)
The recommended projection distance is about 10.9ft,the shortest
projection distance is 3.8ft.The image size depends on the distance
between projector and screen, there may be 3% deviation among
above listed data. Different settings cause various distances.
2. Install on the Ceiling
The projector can be hanged on the ceiling with special hanger
frame, and placed on the stable desk to project the image according
to the operating environment and requirements. In addition, the
projector can be installed with following methods:
1. Please purchase an universal projector ceiling mount.
2. Remove the four rubber pads on the bottom of the projector, you
will see the screw holes and use the M5*11mm screws for installing the
ceiling, and then install it.
Aspect Ratio: 16:9
3.8
5.5
7.6
10.9
13.1
16.4
21.9
Screen Size
Screw holes
EN 9
35"
50"
70"
100"
120"
150"
200"