11
Installation
STEP 1 Determine the header bracket location
To preventpossible SERIOUS INJURY or DEATH:
l Header bracketMUST be RIGIDLY fastened to structural support on header wall or ceiling,
otherwise garage door might NOT reverse when required. DO NOT install header bracketover
drywall.
l Concrete anchors MUST be used if mounting header bracket or 2x4 into masonry.
l NEVER try to loosen, move or adjust garage door, springs, cables,pulleys,brackets,or their
hardware, ALL of which are under EXTREME tension.
l ALWAYS call a trained door systemstechnician if garage door binds,sticks, or is outof 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 bracketwithin 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 when
clearance is minimal.(Itmay be mounted on the wall upside down if necessary,to gain
approximately 1/2" (1 cm).
If you need to install the header bracketon a 2x4 (on wall or ceiling),use lag screws (not
provided) to securely fasten the 2x4 to structural supports.
3. Open your door to the highestpoint oftravel asshown. Draw an intersecting horizontal line on
the header wall 2" (5 cm) above the high point.
NOTE: If the total number of inches exceeds the height available in your garage, use the maximum
height possible, or refer to page 12 for ceiling installation.
Header Wall
Vertical Centerline of Garage Door
2x4
Structural
Supports
Level
(Optional)
Unfinished
Ceiling
2x4
OPTIONAL CEILING MOUNT
FOR HEADER BRACKET
Sectional door with curved track
Header Wall
Track
2" (5 cm)
Highest
Point
of Travel
Door
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