How can I get a BOM to read the size of a part that does have dims in the file?

Our company uses SW07 and we design cabinet assemblies making colinear constraints from board to board and don't use dims for each part.  Is there a way to have the BOM read the board (part) size and insert it in the table.  I have already linked a few dimensions to the BOM but when it comes to parts that are designed without an actual dimension, I can't figure it out.  Please help!!

SolidworksBill Of Materials