Panasonic PT-RQ22KD Operating Instructions (Functional Manual) page 283

Chapter 7 Appendix — Precautions for attaching the Ceiling Mount Bracket
r Dimensions for the screw holes to fix the projector (projector bottom view)
Unit: mm
110 (4-11/32") 145 (5-23/32")
110 (4-11/32")
135 (5-5/16") 145 (5-23/32")
ENGLISH - 283