soffit
Depending on the height of the garage ceiling, you could drop the opener down below the duct work and build a frame support, cover it with the siffit, then screw the opener through the soffit into the framed support. This way the soffit is level from the duct work to the area past the opener. A little creative but would work. Good luck.
Depending on the height of the garage ceiling, you could drop the opener down below the duct work and build a frame support, cover it with the siffit, then screw the opener through the soffit into the framed support. This way the soffit is level from the duct work to the area past the opener. A little creative but would work. Good luck.