Chamberlain 248730 - Manual (Page 18)

17
Installation
STEP 8 Install the door bracket (continued)
OPTION B
ONE-PIECE DOORS
1. Center the door bracket on the top of the door, in line with the header bracket as shown.
2. 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 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.)
For a door with no exposed
framing, or for the optional
installation, use lag screws
5/16"x1-1/2" (not provided)
to fasten the door bracket.
Vertical
Centerline
of Garage
Door
Optional
Placement
of Door
Bracket
Door Bracket
Header Bracket
Header Wall
2x4 Support (Finished Ceiling)
Door
Bracket Top of Door
(Inside Garage)
Top Edge of
Door
Optional
Placement
Optional
Placement
Top Edge
of Door
Top of Door
(Inside Garage)
Door
Bracket
Carriage Bolt 5/16"x2"
(not provided)
Nut 5/16"-18
Lock Washer 5/16"
Metal Door Wood Door Self-Threading
Screw 1/4"-14x5/8"