Fasten Door Bracket (One-Piece Door) - Chamberlain 3500 - 1/2HP Series Owner's Manual

Please read and comply with the warnings and reinforcement instructions on page 24.
They apply to one-piece doors also.
Header Wall
• Center the bracket (with or without the plate
according to your fastening requirements) on the
inside face of the door, in line with the header
bracket as shown. Mark either the left and right, or
the top and bottom holes.
• Drill 5/16" pilot holes and fasten the door bracket
with hardware supplied.
All ONE-PIECE Door Installation Procedure
Finished Ceiling
2x4 Support
Header
Bracket
Door
Bracket
Vertical
Centerline of
Garage Door
Horizontal and vertical
reinforcement is needed for
lightweight garage doors
(fiberglass, aluminum, steel,
door with glass panel, etc.).
Hardware Shown Actual Size
Nut 5/16"-18
25
Inside Edge
of Door or
Reinforcement Board
Door
Bracket
Door Bracket
Plate
Lock Washer 5/16"
Carriage Bolt
5/16"-18x2-1/2"