Chamberlain Power Drive Security+ HD400D Owner's Manual page 24

ONE-PIECE DOORS
Please read and comply with the warnings and
reinforcement instructions on the previous page.
They apply to one-piece doors also.
• Center the door bracket on the top of the door, in
line with the header bracket as shown. Mark either
the left and right, or the top and bottom holes.
• Metal Doors: Drill 3/16" pilot holes and fasten the
bracket with the 1/4"-14x5/8" self-threading screws
provided.
• Wood Doors: Drill 5/16" holes and use 5/16"x2"
carriage bolts, lock washers and nuts
(not provided) or 5/16"x1-1/2" lag screws
(not provided) depending on your installation
needs.
NOTE: 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.)
Header Wall
Finished Ceiling
2x4 Support
Header
Bracket
Door
Bracket
Optional
HORIZONTAL AND VERTICAL
Placement
REINFORCEMENT IS NEEDED
of Door
FOR LIGHTWEIGHT GARAGE
Bracket
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC.).
(NOT PROVIDED)
Vertical
Centerline of
Garage Door
For a door with no exposed framing,
or for the optional installation, use
lag screws 5/16"x1-1/2" (Not Provided)
to fasten door bracket.
24
HARDWARE SHOWN
ACTUAL SIZE
Self-Threading Screw
1/4"-14x5/8"
Self-Threading
Screw
1/4"-14x5/8"
Door
Top of Door
Bracket
(Inside
Garage)
Optional
Placement
METAL DOOR
Nut
Lock
5/16"-18
Washer
5/16"
Top of Door
Door
(Inside
Bracket
Garage)
Optional
Placement
Carriage Bolt
5/16"x2"
(Not Provided)
WOOD DOOR
Top Edge
of Door
Top Edge
of Door