Install The Header Bracket - Chamberlain M150 1/2 HP Owner's Manual

1/2 hp for residential use only
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Installation Step 2

Install the Header Bracket

Fastening the Header Bracket to the Wall
• Center the bracket on the vertical guideline with the
bottom edge of the bracket on the horizontal line as
shown (with the arrow pointing toward the ceiling).
• Mark either set of bracket holes (do not use the holes
designated for ceiling mount). Drill 3/16" pilot holes
and fasten the bracket securely to a structural support
with the hardware provided.
Wall
Mounting Holes
CEILING MOUNT ONLY
UP
Optional
Wall Mounting
Holes
Header
Wall
Header
Bracket
2x4
Structural
Support
Highest
Point of Travel
(of Garage Door)
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
Vertical
Center
Lag Screws
Line
5/16"x9x1-5/8"
Door
Spring
Garage
Door
Vertical
Center
Line
Hardware Shown Actual Size
Lag Screw
5/16"-9 x 1-5/8"
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.
Fastening the Header Bracket to the Ceiling
• Extend the vertical guideline onto the ceiling as shown.
• Center the bracket on the vertical mark, no more than 6"
from the wall. Make sure the arrow is pointing toward
the wall. The bracket can be mounted flush against the
ceiling when clearance is minimal.
• Mark holes designated for ceiling mount only. Drill
3/16" pilot holes and fasten bracket securely to a
structural support with the hardware provided.
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
Header
Bracket
6"
Maximum
Door
Spring
Garage
Door
10
Ceiling Mounting Holes
CEILING MOUNT ONLY
UP
– Finished Ceiling –
Vertical
Center Line
Lag Screws
5/16"x9x1-5/8"
Header
Wall
Vertical
Center Line

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