Dear Forum administrator, If you could please retain to the discussion Ed's picture from Kar Rubber of the cross section cut away, I would really appreciate it.The photo being acessible to everyone serves as a reference if any body needs to compare what they have in their coach's and when inquiry with vendors it makes it easy to send. It was very helpful to me personally, after looking at illustrations of rubber door seals cross sections today, a photo is more better! A BIG THANKS1 TO JEREMY AND PAUL FOR ORIGINATING THIS DISCUSSION FOR IF NOT FOR THEM I WOULD OF NOT LAID ON MY BACK AND ACTUALLY REALIZED IN WHAT CONDITION MY DOOR SEALS ARE IN ALONG THE BOTTOMS OF MY DOORS. Twisted, dry cracked, hanging loose, I can't believe I missed it, but all the other sides of the door seal that you can actually see from the regular line of sight standing upright, are alot better condition just collapsed and displaced, but truthfully I knew it was that bad and I just didn't want to deal with it. It is a valuable detail and performance component of our coach if installed effectively. Saves energy in the summer if you don't have to run your A.C as hard because your not getting it sucked out from between your leaking seals. Ultimately your gas mileage goes up to. So my opinion, money well spent.