So I have this 1961 year old House.
These days, when sheathing (plywood) is placed, it's placed directly on the structural studs, and nailed.
But my house has this strip of 11/16" wood placed across the 2 by 4 structural studs before the sheathing was installed. I have attached the picture. This strip of wood basically pushes the sheathing 11/16" away from the 2 by 4 wall studs.
on the first Picture, I am referring to the strip of wood that runs parallel to the ground. The second picture is closeup picture but flipped 90 degrees counterclockwise. But you can see the strip I am referring to.
So if I order a door with Jamb size of 4-9/16, will I still be OK? Or do I have to order custom? The door I plan to order comes with frame installation flange, and I want to keep that flange. So what do you all say? Thank you.