My van is branded a Fleetwood but was built by Adria back in it's day, and I'm thinking heights cant be that much different.
I have a Kampa Rally(NOT AIR!!) and the height is stated as... Suitable for caravans with a rail height between 235 - 250 cm
What I like about it also is if the pitch you are on is not level the front pole,s are adjustable.
Click here for a taster
They have the sizes and more info in the link.
Also be aware of the extra's if you want them. Storm straps, Storm poles, Rear Poles.
There are other makes available