I assume the door leaf sizes are parameters in the door object.
A label can access these parameters, but it has to be scripted (GDL) specifically to do so.
However in your schedule you can directly access the parameters of an object.
In the schedule settings you need to add a field/s for the door leaf/s.
Click on the arrow next to 'Add Fields' button and choose 'Library Part Parameters'.
Then browse for the door object and find the parameter for the door leaf.
Repeat if there is a second parameter for the other leaf.
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Versions 6.5 to 25
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