Chamberlain 1200 - Manual (Page 25)

Door
Bracket Top of Door
(Inside Garage)
Carriage Bolt
5/16"-18x2-1/2"
Optional
Placement
Lock Washer
5/16"
Nut
5/16"-18
Horizontal and vertical
reinforcement is needed for
lightweight garage doors
(fiberglass, aluminum, steel,
door with glass panel, etc.).
Header Wall
Vertical
Centerline of
Garage Door
— Finished Ceiling —
Optional
Placement
of Door
Bracket
Header
Bracket
Top Edge
of Door
2x4 Support
Door
Bracket
For a door with no
exposed framing or for
the optional installation,
use 5/16"x1-1/2" lag
screw (not supplied) to
fasten door bracket.
All ONE-PIECE Door Installation Procedure
• 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 supplied) 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 supplied) to fasten
the bracket to the door.
25
Please read and comply with the warnings and reinforcement instructions on page 24.
They apply to one-piece doors also.
Carriage Bolt
5/16"-18x2-1/2"
Nut 5/16"-18 Lock Washer 5/16"
Hardware Shown Actual Size