INSTALLATION STEP 1
Determine the Header Bracket Location
WARNING
| Unfinished | OPTIONAL |
| Ceiling | |
| CEILING | |
|
| |
|
| MOUNT |
|
| FOR |
|
| HEADER |
|
| BRACKET |
Header Wall |
| 2x4 |
To prevent possible SERIOUS INJURY or DEATH:
• Header bracket MUST be RIGIDLY fastened to |
structural support on header wall or ceiling, otherwise |
garage door might not reverse when required. DO NOT |
install header bracket over drywall. |
• Concrete anchors MUST be used if mounting header |
bracket or 2x4 into masonry. |
• NEVER try to loosen, move or adjust garage door, |
springs, cables, pulleys, brackets, or their hardware, all |
of which are under EXTREME tension. |
• ALWAYS call a trained door systems technician if |
garage door binds, sticks, or is out of balance. An |
unbalanced garage door might not reverse when |
required. |
1. Close the door and mark the inside vertical |
centerline of the garage door. |
2. Extend the line onto the header wall above the |
door. |
You can fasten the header bracket within 4 feet |
(1.22 m) of the left or right of the door center |
only if a torsion spring or center bearing plate |
is in the way; or you can attach it to the ceiling |
(see page 9) when clearance is minimal. (It may |
be mounted on the wall upside down if |
necessary, to gain approximately 1/2"[1.27 cm].) |
Vertical Centerline
of Garage Door
2x4
Level 
(optional)
Header Wall
2" (5 cm) Track
Highest Point
of Travel
Structural Supports
If you need to install the header bracket on a 2x4 |
(on wall or ceiling), use lag screws (not provided) |
to securely fasten the 2x4 to structural supports as |
shown here and on page 9. |
3. Open your door to the highest point of travel as |
shown. Draw an intersecting horizontal line on the |
header wall 2" (5 cm) above the high point. This |
height will provide travel clearance for the top edge |
of the door. |
Proceed to Step 2, page 9.
Sectional door
Doorwith curved track
Sectional door with curved track
8