The exact location depends on the type of door.
How to hang garage door opener from ceiling.
Measure the vertical distance.
To install the opener you ll need to hang another angle iron from the center joist on your garage s ceiling.
Lift the motor enough that you are able to place a 2 inch by 4 inch board on its side between the door and the opener rail.
First put the rail together.
Set it securely on top of a stepladder so it s conveniently close to the ceiling.
Position a stepladder next to the door opener motor.
Garage door openers come in several varieties.
The garage door opener mounting bracket also called the header bracket secures the carriage tube to the wall above the door.
Lift the power unit.
This should come in several pieces that fit easily together.
2 x research source attach them together as directed.
Vertical supports and braces 1.
Position the stepladder under the center of the cross member with the rungs parallel to the face of the door.
Installing the garage door opener.
Using a 4 foot level as a.
Install the garage door opener.
Move the motor left or right until the rail is at the center of the door width.
Gently lower the motor until the rail is resting on the board.
Place the motor on one of the rungs that corresponds with the height of the rail bracket.