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SECTIONAL DOORS
1. Measure the width of the door to determine the center.
2. Place a mark on the top of the door and the header
above the door to indicate the DOOR CENTERLINE FIG. 2.
DETERMINE HIGHEST POINT OF DOOR TRAVEL
1. Get on a ladder to the side of the garage door.
2. Have someone lift the door open slowly.
3. As the door is raised, find the highest point where the door extends above the door tracks, which is the
highest point of door travel. FIG. 3. This is typically where the top door roller exits the curved portion of
the door track onto the horizontal section as the door is raised.
4. With a tape measure, determine the distance from the
highest point of door travel to the floor.
Header
Sectional
Door
5. Place a mark on the garage header at the highest point of door travel at the DOOR CENTERLINE.
6. Add 2-1/2 inches and mark above the highest point mark. FIG. 4.
7. Position the header bracket on this mark so that the mounting holes intersect with this line.
8. Drill 5/32" pilot holes in header.
9. Secure header bracket with 5/16" x 1-3/4" lag screws.
NOTE : If door spring rests where door bracket should be mounted using the instructions above, move door
bracket just above door spring.
INSTALL HEADER BRACKET
Highest point of door travel
Door Track
Measure distance from the
highest point of door travel
SIDE VIEW
FIG. 3
Mark Door Centerline
CENTERLINE.
FIG. 2
5/16" x 1-3/4" Lag screw
Door centerline
Header bracket
Plus 2-1/2" for
sectional doors
Highest point
of door travel as
door opens
FIG. 4
Header
9
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