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STEP 3:
4 x Holes on the wall, then 4 x expansions screws into the hole (as arrow points).
STEP 4:
Fix adjusting bracket on the wall (as arrow points).
STEP 5:
Installation of two adjusting brackets, make sure lock the brackets tight by Butterfly hand screw.
Expansion screws’ spec M8*60
hole deep 45MM
Hole diameter 11MM
Screw +Flat washer + Spring
washer + Nut(Spec:M4)
Butterfly hand screw
Flat washer
Spring washer
Nut(Spec:M8)
（）
expansion screws