Chamberlain 459950 Manual De Usuario

13

You can attach the header bracket either to the wall above 
the garage door, or to the ceiling. Follow the instructions 
which will work best for your particular requirements. Do 
not install the header bracket over drywall. If installing 
into masonry, use concrete anchors (not provided).

•   Center the bracket on the vertical centerline with the 

bottom edge of the bracket on the horizontal line as 
shown (with the arrow pointing toward the ceiling). 

•    Mark the vertical set of bracket holes. Drill 3/16" pilot 

holes and fasten the bracket securely to a structural 
support with the hardware provided.

•   Extend the vertical centerline onto the ceiling as shown.

•   Center the bracket on the vertical mark, no more than 

6" (15 cm) from the wall. Make sure the arrow is 
pointing away from the wall. The bracket can be 
mounted fl ush against the ceiling when clearance 
is minimal.

•    Mark the side holes. Drill 3/16" pilot holes and fasten 

bracket securely to a structural support with the 
hardware provided.

Lag Screw
5/16"-9x1-5/8"

Vertical 
Centerline
of Garage 
Door

Vertical 
Centerline
of Garage Door

Vertical Centerline
of Garage Door

Vertical 
Centerline
of Garage Door

Garage Door

Optional 
Mounting Holes

Lag Screws
5/16"-9x1-5/8"

Lag Screws
5/16"-9x1-5/8"

2x4
Structural
Support

Horizontal
Line

Ceiling Mounting Holes

Wall Mount

Header
Bracket

Header
Bracket

Door Spring

Door 
Spring

Highest Point of 
Garage Door Travel

6" (15 cm) Maximum