One-Piece Doors - LiftMaster MERIK SECURITY+ 790LMK Manual Del Propietário

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
38 mm Support
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.
HARDWARE SHOWN
Self-Threading Screw
1/4"-14x5/8"
Door
Bracket
Nut
5/16"-18
Door
Bracket
26
ACTUAL SIZE
Self-Threading
Screw
1/4"-14x5/8"
Top of Door
(Inside Garage)
Top Edge
of Door
Optional
Placement
METAL DOOR
Lock
Washer
5/16"
Top of Door
(Inside Garage)
Top Edge
of Door
Optional
Placement
Carriage Bolt
5/16"x2"
(Not Provided)
WOOD DOOR