Chamberlain C253 Guide De L'utilisateur page 8

Installation
One-Piece Doors Only
1. Center the door bracket (O) 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 (OO) provided.
l
Wood Doors:
Drill 5/16" holes and use 5/16"-18x2" carriage bolts, lock washers and nuts (not provided) or 5/16"x1-1/2"
l
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 one-piece door installation continue to page 9
Header Wall
2x4 Support
Header Bracket
O
Vertical
Centerline
of Garage
Door
Metal Door
OO
7/16"
Top of Door
(Inside Garage)
O
Top Edge of
Door
Optional
Placement
8
(Finished Ceiling)
Optional
For a door with no exposed
Placement
framing, or for the optional
of Door
installation, use lag screws
Bracket
5/16"x1-1/2" (not provided)
to fasten the door bracket.
One-Piece Door
Wood Door
O
Hardware
(not provided)
Top of Door
(Inside Garage)
Top Edge
of Door
Optional
Placement
Hardware
(not provided)