Usually that type of measurement is from ground to ground through the awning channel. My caravan is a Bailey Pageant Bordeaux 2002, Isabella size search for mine is 950, external body length is about 6 Meters. Yours must be a bit longer so if you went for 7 meters you should be OK, can always fold over or under if its slightly too long. What length is the body of your van?
------------- 73 going on 25
Beauty is in the eye of the beerholder
I suppose I will just have to wait until we collect the caravan on Saturday then measure when the awning is up, so that will be 3 weeks later giving me enough time to work out how to do it.