Fasten Door Bracket (One-Piece Door) - Chamberlain 1280 Owner's Manual

Please read and comply with the warnings and reinforcement instructions on page 20.
They apply to one-piece doors also.
Header Wall
• Center the bracket on the top of the door, in line
with the header bracket as shown. Mark holes.
• Drill 5/16" pilot holes and fasten the door bracket
with hardware supplied.
If the door has no exposed framing, drill 3/16" pilot
holes and fasten the bracket with 5/16"x1-1/2" lag
screws (not provided) to the top of the door.
The door bracket may be installed on the top
edge of the door if required for your installation.
(Refer to the dotted line optional placement
drawing.) Drill 3/16" pilot holes and substitute
5/16"x1-1/2" lag screws (not provided) to fasten
the bracket to the door.
All ONE-PIECE Door Installation Procedure
Header
2x4 Support
Bracket
Optional
Door
Placement
Bracket
of Door
Bracket
Vertical
Centerline of
Garage Door
— Finished Ceiling —
Horizontal and vertical reinforcement is
needed for lightweight garage doors
(fiberglass, aluminum, steel, door with
glass panel, etc.). (Not Provided)
Nut
5/16"-18
Door
Bracket
For a door with no
exposed framing or for
the optional installation,
use 5/16"x1-1/2" lag
screws (not provided)
to fasten door bracket.
Hardware Shown Actual Size
Nut 5/16"-18
21
Lock Washer
5/16"
Top of Door
(Inside Garage)
Top Edge
of Door
Optional
Placement
Carriage Bolt
5/16"-18x2-1/2"
Lockwasher 5/16"
Carriage Bolt
5/16"-18x2-1/2"