INSTALLATION STEP 8
FASTEN THE DOOR BRACKET
Fiberglass, aluminum or lightweight steel garage doors WILL
REQUIRE reinforcement BEFORE installation of door bracket.
Contact the garage door manufacturer or installing dealer for
opener reinforcement instructions or reinforcement kit.
Follow instructions which apply to your door type as illustrated below
or on the following page.
A horizontal reinforcement brace should be long enough to be
secured to two or three vertical supports. A vertical reinforcement
brace should cover the height of the top panel.
Figure 1 shows one piece of angle iron as the horizontal brace. For
the vertical brace, 2 pieces of angle iron are used to create a U-
shaped support. The best solution is to check with your garage door
manufacturer for an opener installation door reinforcement kit.
NOTE: Many door reinforcement kits provide for direct attachment of
the clevis pin and door arm. In this case you will not need the door
bracket; proceed to Step 9.
SECTIONAL DOORS
1. Center the door bracket on the previously marked vertical
centerline used for the header bracket installation. Note
correct UP placement, as stamped inside the bracket.
2. Position the top edge of the bracket 2"-4" (5-10 cm) below
the top edge of the door, OR directly below any structural
support across the top of the door.
3. Mark, drill holes and install as follows, depending on your
door’s construction.
Metal or light weight doors using a vertical angle iron brace
between the door panel support and the door bracket:
• Drill 3/16" fastening holes. Secure the door bracket using the
two 1/4"-14x5/8" self-threading screws. (Figure 2A)
• Alternately, use two 5/16"-18x2" bolts, lock washers and nuts
(not provided). (Figure 2B)
Metal, insulated or light weight factory reinforced doors:
• Drill 3/16" fastening holes. Secure the door bracket using the
self-threading screws. (Figure 3)
Wood doors:
• Use top and bottom or side to side door bracket holes. Drill
5/16" holes through the door and secure bracket with 5/16"-
18x2" carriage bolts, lock washers and nuts (not provided).
(Figure 4)
NOTE: The 1/4"-14x5/8" self-threading screws are not intended for
use on wood doors.
Figure 1
Door Bracket
Vertical Centerline
of Garage Door
Vertical Reinforcement
Self-Threading
Screw 1/4"-14x5/8"
UP
Figure 2A
Figure 2B
Bolt
(Not
Door
Bracket
Vertical Reinforcement
5/16"-18x2"
(Not
Provided)
Nut
5/16"-18
Lock Washer 5/16"
UP
Vertical
Centerline
of Garage Door
UP
Self-Threading Screw
1/4"-14x5/8"
Vertical
Centerline
of Garage Door
UP
Inside Edge
of Door or
Reinforcement Board
Bolt 5/16"-18x2"
(Not Provided)
Vertical
Centerline
of Garage
Door
Figure 3
Figure 4
Vertical
Centerline
of Garage
Door
Door
Bracket
Location
Header
Bracket
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED FOR
LIGHTWEIGHT GARAGE DOORS
(FIBERGLASS, ALUMINUM, STEEL,
DOORS WITH GLASS PANEL, ETC.).
(NOT PROVIDED)
Self-Threading
Screw
1/4"-14x5/8"
HARDWARE
SHOWN ACTUAL
SIZE
19
