NEC PA803U User Manual page 165

Reference drawings
* The drawing showing the dimensional requirements is not an actual stand design drawing.
Rear foot
[Side View]
200
Screw holes for 4 -
M4 use
Tilt foot (remove)
130 or greater
6. Installation and Connections
[Front View]
Filter cover (when opened)
Horizontal adjuster
151
[Bottom View]
315 or greater
Filter cover