Craftsman 139.53645SRT3 Garage Door Opener User Manual


 
"Installation Step 2 I
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,
Fasten 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.
__ Header __
Wall
Lag Screws
5/16"x9xt-5/8"
Wall
Mounting Holes
2x4
Structural
Suppod
J
Highest
Point of Travel
(of Garage Door)
Door
Spdng
Garage
Door
Vertical
Center
Line
The nail hole is for positioning
only. You must use lag screws to
mount the header bracket.
Optional
Wall Mounting
Holes
Hardware Shown Actual Size
q o01rewI>
5/16"-9xl-5/8"
Fasten 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.
Ceiling Mounting Holes
Door
Spdng
The nail hole is for positioning only,
You must use lag screws to mount
the header bracket•
Header
Wall
14