13
Fiberglass, aluminum or lightweight steel garage doors
WILL
REQUIRE
reinforcement (not provided) BEFORE installation of
door bracket. Contact your door manufacturer for reinforcement
kit.
INSTALLATION STEP 6
Fasten the Door Bracket
1. Centre the door bracket on the previously marked
vertical centreline used for the header bracket
installation.
NOTE: Door bracket must be installed with open end
up as illustrated below. If the bracket plate is used
observe the “TOP” indicator on the plate.
2. Position the top edge of the bracket 150-250 mm
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 doors construction:
Metal or lightweight doors using a vertical angle iron
brace between the door panel support and the door
bracket:
• Drill 4.5 mm fastening holes. Secure the door bracket
using the two self-threading screws (Figure 2A).
• Alternately, use two 8 mm bolts, spring washers and
nuts (not provided) (Figure 2B).
Metal, insulated or lightweight factory reinforced
doors:
• Drill 4.5 mm 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 8 mm holes through the door and secure bracket
with 8 mm carriage bolts, spring washers and nuts (not
provided) (Figure 4).
NOTE: The self-threading screws are not intended for
use on wood doors.
Vertical
Centreline
of Garage
Door
Door
Bracket
Location
Header
Bracket
Door
Bracket
Vertical
Centreline
of Garage Door
UP
Vertical
Reinforcement
Door
Bracket
Nut
Bolt
Spring Washer
Vertical
Reinforcement
Self-Threading
Screw
(Not Provided)
Vertical
Centreline
of Garage Door
Bracket Plate
Figure 1
Figure 2A
Figure 2B
Self-Threading Screw
HARDWARE
UP
UP
Inside Edge
of Door or
Reinforcement Board
Bolt
Self-Threading
Screw
(Not Provided)
Vertical
Centreline
of Garage Door
Vertical
Centreline
of Garage
Door
Nut
Spring Washer
Figure 4
Figure 3
Summary of Contents for Merlin Whisper Drive MT3850EVO
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