LG 55EJ5K-B.AAU Owner's Manual page 27

Portrait
1
Attach the Wall Fixer Guide on the wall.
2
Fix the four wall fixers on the holes of the Wall Fixer Guide (by tightening 8 screws).
3
After fixing the wall fixers, remove the Wall Fixer Guide.
4
Slide the display from the top in the downwards direction to secure it.
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