Install The Header Bracket - Chamberlain 248739M Owner's Manual

INSTALLATION STEP 2

Install the Header Bracket

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).
WALL HEADER BRACKET INSTALLATION
• 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.
HARDWARE SHOWN ACTUAL SIZE
CEILING HEADER BRACKET INSTALLATION
• 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"
Ceiling Mounting Holes
Optional
Mounting Holes
- Header Wall -
2x4
Structural
Support
Header
Bracket
Horizontal
Line
Highest Point of
Garage Door Travel
Header
Bracket
6" (15 cm) Maximum
Door
Spring
Garage Door
13
Wall Mount
- Garage Door -
Vertical
Centerline
of Garage Door
- Finished Ceiling -
Vertical Centerline
of Garage Door
- Header Wall -
Vertical
Centerline
of Garage Door
Vertical
Centerline
of Garage
Door
Lag Screws
5/16"-9x1-5/8"
Door Spring
Lag Screws
5/16"-9x1-5/8"