Fasten the header bracket securely to structural supports. It may be necessary to use a 2x4 as a structural support if installing on drywall or between two studs. Securely fasten the 2x4 to structural supports using lag screws (not provided). Concrete anchors MUST be used if mounting the header bracket or 2x4 into masonry.
Note: You can fasten the header bracket within 4 feet (1.2 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. (It may be mounted on the wall upside down if necessary, to gain approximately 1/2" (1 cm).
To prevent SERIOUS INJURY or DEATH:
Perform the following steps to install the header bracket:
- Mark the center of the garage door on the door and wall and extend onto the ceiling.
- Determine the highest point of travel, and draw a horizontal line for header placement. Mark a spot on the "center of the garage door" line
- 2" (5 cm) above the highest point of travel for sectional and one-piece door with track.
- 8" (20 cm) above the highest point of travel for one-piece door without a track.
- Add a 2x4 as a structural support (if necessary).
- In some installations it may be necessary to install a 2x4 across two studs to create a location for the header bracket or over drywall.
- Use lag screws (not provided) to secure the 2x4 (structural support) into the wood. Use concrete anchors to secure the 2x4 into masonry.
- Mark the bracket holes.
- Center the bracket on the "center of garage door" line and the horizontal line made in Step 2.
- Drill two 3/16" pilot holes.
- Secure the bracket with lag screws (with the arrow pointing towards the ceiling).
- Ceiling mount the bracket (optional)
Note: If your installation requires that the header bracket be mounted on the ceiling, the back edge of the bracket MUST NOT be further than 6" (15 cm) from the header wall and the arrow MUST point away from the header wall. Center the bracket on the "center of garage door" line. The bracket can be mounted flush against the ceiling when clearance is minimal.
- Attach the rail to the header bracket. Position the opener on the garage floor below the header bracket. Use packing material as a protective base.
Note: If the door spring is in the way, you'll need help. Have someone hold the opener securely on a temporary support to allow the rail to clear the spring.
- Position the rail bracket against the header bracket.
- Align the bracket holes and join with a clevis pin 5/16" x 1-1/2".
- Insert a ring fastener to secure.