Epson PowerLite Pro Z9750UNL User Manual page 30

Note: The optional installation frame (ELPMB44) and portrait lamps (ELPLP83/ELPLP84) are required
when using portrait projection. Be sure to mount the projector with the air intake vent facing down and at
least 4 inches (10 cm) of space between the projector and the mounting surface as shown.
If you project from the ceiling, remove the projector's feet and attach the foot covers as shown.
Note: Do not remove the projector's handles.
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