Epson PowerLite Pro Z9750UNL User Manual page 28

Rear/Upside Down
Note: Be sure to leave at least 20 inches (50 cm) of space in front of the air exhaust and intake vents
and, when setting up multiple projectors, 20 inches (50 cm) of space between the projectors.
Note: The upside down settings refer to the projected image. Do not install the projector upside down.
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