Sony BRAVIA HDMI VPL-AW15 Operating Instructions Manual page 66

Ceiling Installation
Use the PS S-H 10 o1"PS S-610 Projector Suspension Support when you install the projector
on a ceiling. The projection distances for ceiling installation ;ure shown below.
a: Distance between the screen and the installation hole at the
ceiling side of the ceiling mount unit (front side)
x: Distance between the ceiling and the center of the screen such
that the picture will not be truncated or blocked
PSS-HIO Projector Suspension
Support (not supplied)
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