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4. PREPARING THE OPENING
On the inside of the garage the door opening should be framed with wood jambs, 2 x 4's or 2 x 6's. The jambs should
extend 12 inches above the header. If you have just removed an old door, the jambs should be inspected for the
condition of the wood. If the wood is rotten it should be replaced now. The jambs should be plumb and the header level.
If there are any bolts fastening the jambs to the wall, the heads should be flush so they don't interfere with the
installation of the new door.
NOTE: Opening width = Door Width
If the door has a torsion spring assembly, YOU MUST MAKE SURE THAT THE TORSION
SPRING ANCHOR BRACKET WILL BE SECURELY FASTENED TO THE GARAGE WALL.
Anchor into wood stud or structurally sound member. Failure to securely fasten the
anchor bracket could allow the springs to break loose from the garage wall and cause
severe personal injury.
WOOD STUD OR STRUCTURALLY SOUND MEMBER
FOR TORSION SPRING ANCHOR BRACKET ATTACHMENT
2X4 OR 2X6 JAMB
Check Headroom
Headroom is the space needed above the top of the door opening for the door, the overhead tracks and the
springs. Measure to check that there are no obstructions in your garage within that space. The standard
headroom is 12 inches and the minimum headroom space requirement is 10-
top of the opening, then measure the door-to-ceiling clearance. This should be a minimum of 10-1/2 inches.
The backroom distance is measured from the back of the door into the garage, and should be at least 18 inches
more than the height of the door.
A minimum sideroom of 1-
NOTE
: About three inches of additional headroom height at the center plus additional backroom is needed to
install an automatic garage door opener. Check door opener instructions.
Low Headroom- If you have restricted headroom, several remedies are available. For the correct product,
contact your nearest Overhead Door distributor.
STOP MOLDING INSTALLATION
1. Stop molding is required to correctly install this
door. It must be installed inside door opening on
jambs and header. Refer to Figure 4-3 on proper
location of the stop molding in reference to the
jamb.
NOTE: Stop Molding and nails are not included in
the standard door kit. Contact your nearest
Overhead Door distributor for these parts.
2X4 OR 2X6 HEADER
OPENING WIDTH = DOOR WIDTH
FIGURE 4-1
½
inches should be available on each side of the door.
TORSION SPRINGS
12" STANDARD
HEADROOM
1-1/2"
SIDEROOM
OPENING
HEIGHT
1-1/2" MIN.
SIDEROOM
10
OPENING HEIGHT + 18"
FIGURE 4-2
½
inches. If the Door overlaps the
Stop Molding
Jamb
Do not set nails initially.
1/4"
Initially, install 1/4" inside jamb.
FIGURE 4-3
BACKROOM =
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