Fasten Door Bracket (Sectional Door) - MasterMechanic 622-2MM Owner's Manual

Installation Step 11
Fasten Door Bracket
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 12.
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" 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" 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"x2" 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.
HARDWARE SHOWN
ACTUAL SIZE
Self-Threading
Screw
1/4"-14x5/8"
24
CAUTION CAUTION
To prevent damage to steel, aluminum, fiberglass or
glass panel doors, always reinforce the inside of the door
both vertically and horizontally with an angle iron.
Header
Bracket
Door
Bracket
Location
Vertical
Centerline
Figure 1
(Not Provided)
Vertical
Reinforcement
Vertical
Centerline
UP
Door
Bracket
Self-Threading
Screw
1/4"-14x5/8"
Figure 2A
Vertical
Centerline
UP
Self-Threading
Screw
1/4"-14x5/8"
Figure 3
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC).
(NOT PROVIDED)
Vertical
Reinforcement
Vertical
Centerline
Bolt
5/16"-18x2"
Door
Bracket
Lock Washer
5/16"
Nut
5/16"-18
Figure 2B
Inside Edge
(Not Provided)
of Door or
Reinforcement Board
Bolt
5/16"x2"
UP
Vertical
Centerline
Figure 4
UP