Tom,
Alan's instruction are quite helpful. Still, it sometimes helps to get a "face-to-face" look. If you want to look at a door with the seal on it, I live in Castleton-on-Hudson. Feel free to send me an email message and set up a visit to see my doors (they are in a cold garage). I have the lower retaining strips installed on the doors.
Good luck,
Tim
lederman@siena.edu 
