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d. L-bracket fixing bolt positioning
Take into account the actual surface condition before fixing the L-bracket: the bolt spacing is 406
mm (16 inches) for the inner ones and 508mm (20 inches) for the outer ones, as illustrated below.
Avoid electricity wire, metal conduit or pipe inside the wall; consider using wall scanner
(wall detector)
3.2 Installation
3.3.1 Installation tools
Impact drill
(3/8 & 13/64 drill)
Hammer
Personal Protective Equipment (PPE)
508mm（20inches）
406mm（16inches）
Torque wrench
(7/16 & 9/16
hexagonal socket)
Detector
8
Wall
L- bracket
Marker pen
Steel tape
Electric batch
Level ruler
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