To install the opener you ll need to hang another angle iron from the center joist on your garage s ceiling.
How to install garage door opner on garage door.
Garage door openers come in several varieties.
Follow the manufacturer s instructions to assemble the opener and mount the rail to the header bracket above the door.
Lift the power unit.
Set it securely on top of a stepladder so it s conveniently close to the ceiling.
Connect the bracket and the end of the assembly as directed in the installation instructions.
Fix the door bracket in place.
With a safety ring and a steel pin join the free end of the rail with the header bracket.
Then install the motor brackets.
The exact location depends on the type of door.
Place the opener on a ladder and use scrap lumber to get it at the height you need.
After that attach the motor to the brackets and verify the rail is perfectly horizontal with a bubble level.
Attach the bracket the opener came with to the wall above the door and then insert the end of the assembly into it.
Lean the end of the assembly opposite the motor compartment up above the garage door.
Install the garage door opener.
Follow the included instructions to hook up the opener and fasten it to the spring system with a pulley and cable.