Install The Header Bracket - Chamberlain 3500 - 1/2HP Series Owner's Manual

Installation Step 2

Install the Header Bracket

• 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).
Header
Wall
Header
Bracket
2x4
Structural
Support
Highest
Point of Travel
(of Garage Door)
• 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
CEILING MOUNT ONLY
The nail hole is for positioning only.
You must use lag screws to mount
the header bracket.
Fasten the Header Bracket to the Wall
Vertical
Center
Line
Garage
Door
Vertical
Center
Line
Fasten the Header Bracket to the Ceiling
UP
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.
• 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.
Lag Screws
5/16"x18x1-7/8"
Door
Spring
The nail hole is for positioning
only. You must use lag screws to
mount the header bracket.
Hardware Shown Actual Size
6" Maximum
Door
Spring
Garage
Door
14
Wall
Mounting Holes
CEILING MOUNT ONLY
UP
Optional
Wall Mounting
Holes
Lag Screw
5/16"-18x1-7/8"
Finished
Ceiling
Vertical
Center Line
Header
Bracket
Lag Screws
5/16"x18x1-7/8"
Header
Wall
Vertical
Center Line