The opener can be installed within 4 feet to the left or right of the door center if there is a torsion spring or center bearing plate in the way of the header bracket or door bracket area.
Mounting a garage door opener off center.
To offset mount the opener arm to the door section.
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You can be off center with the opener provided the door has a torsion spring which it sounds like yours does if your door was extension spring the kind when the spring stretch along the horizontal track then it wouldn t work properly.
Attach the straps to the power unit with the hardware provided.
Some of the door openers especially commercial brands mount along side of the door on the wall and may work if you can find one that is cost effective.
Attach the straps to the irons with hex head screws.
As you said run perforated angle iron from the center stile to the next stile over.
Go ahead and mount it off center and save yourself a headache.
This type of garage door drive has a ceiling mounted system with a rail track and lift you maneuver using a chain belt or screw drive mechanism.
If the door is properly balanced you should be able to locate the operator anywhere but always perpendicular to the door.
Can an opener be offset from the center maybe a couple of feet.
Overhead garage door openers have traditionally been the most common popular option for homeowners.
That means the garage door opener won t work if it is placed in the center of the door.
Bolt the angle irons to a rafter or rafters with lag screws.
Use one piece as near to the top as you.
If your door has extension springs the opener must be installed in the center of the door.
Offset garage door opener guests.
You can t solve you re problems with the same level of thinking that created the problems.