Hi. I have just joined practical caravan and was wondering about the possibility of using the same awning on a campervan ( fiat ducato rail height 210 cm ) and a small caravan ( Avondale Chiltern rail height 240 cm). I regular ly tour with a friend who owns the caravan while I tow with s campervan. Of course there are times when we take the campervan without the caravan so it would be good to have an awning that we could use with both. We are looking at air awnings currently preferably the drive away type. Hope someone could advise.