Chamberlain 3130M 1/3 HP - Manual (Page 20)

20
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.)
HARDWARE SHOWN ACTUAL SIZE
Self-Threading Screw
1/4"-14x5/8"
METAL DOOR
Finished
Ceiling
WOOD DOOR
Self-Threading
Screw 1/4"-14x5/8"
Door
Bracket
Door
Bracket
Top of Door
(Inside Garage)
Header Wall
Door
Bracket
2x4 Support
Optional
Placement
of Door
Bracket
Header
Bracket
Vertical
Centerline of
Garage Door
HORIZONTAL
AND VERTICAL
REINFORCEMENT
IS NEEDED FOR
LIGHTWEIGHT
GARAGE DOORS
(FIBERGLASS,
ALUMINUM, STEEL,
DOORS WITH GLASS
PANEL, ETC.). (NOT
PROVIDED)
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.
Top of Door
(Inside Garage)
Top Edge
of Door
Top Edge
of Door
Optional
Placement
Optional
Placement
Nut
5/16"-18
Carriage Bolt
5/16"x2"
(Not Provided)
Lock Washer
5/16"