FWB MultiBall Pro Setup Manual page 16

Step 7
Mount Covers
1. Mount the Covers with the sensor holes facing inwards.
2. Use Cover Bolt M6.
Cover Bolt M6
Carefully slide in the covers and avoid pinching or bending
the light bar cables!
If using an electric impact drill, make sure not to damage
the white surface of the wall!
Use provided bolts.
Once covers are on repeat Step 6 "Calibrate LVXs"