Nice site lots of info wish I had seen it before I had put the windows in the first time

I have rubber seal type. Ther guy who sold it to me said it came from a t4. I did not really care as it was the right size to fit in the side panel of the lt. I have just had scrapped out two windows on the side of my camper and one is the "t4" type. The only ones I have managed to get are a bit bigger and have got the reccessed type seal. Has any one got experience with this type as there are several grooves and am not sure which one to aim to fit the metal too !

gunga-dan