Chamberlain B550C Manuel D'installation page 17

Horizontal Reinforcement
Vertical Reinforcement
FIGURE 1
Vertical
Reinforcement
Vertical
Centerline
of Garage Door
UP
Door Bracket
Self-Threading Screw
FIGURE 3
Vertical
Centerline
of Garage Door
UP
Self-Threading
Screw
HARDWARE
Self-Threading Screw
1/4"-14x5/8"
FIGURE 2
Vertical Reinforcement
Vertical Centerline
of Garage Door
Hardware
(not provided)
FIGURE 4 Inside Edge of Door or
Reinforcement Board
Hardware
(not provided)
Vertical Centerline of
Garage Door
Door Bracket
UP
UP