Pocket doors - Structural Opening width/height.

[FranAJA]

I am struggling to retrieve the structural opening width and height for pocket doors.
The values also appear incorrect when generating a schedule that includes other types of doors.

By "structural opening," I mean the overall dimensions of the door (3432), including the full width and height of the opening in the wall. I do not fully understand what the value "1800" represents in the actual geometry.
Since is important for door tags and schedule does someone have a clue about that ?

[Jonathan Pickup]

I think you are correct, the structural opening, or rough opening should show the size of the pocket as the lintel has to span that distance. The 1800 in your example is measured to the structural opening of the door including the shim gaps ( listed in the Frame tab of the door settings).