I posted some info a few replies back:

http://dmctalk.org/showthread.php?11...l=1#post164166

The link to LMB heeger appears to no longer work, here's a new one direct to the correct crown royal series boxes:

http://lmbheeger.com/cr852-bluegrey.aspx

The dimensions for the LMB boxes are 8.5 x 2.125 x 1.625.