I think for a van, your best bet would be a self contained awning that extends out of its own box with arms that unfold. I don't know the brands, but I've seen them on smaller trailers and class C moho's. Although ZipDee is A+, I think this type of awning would be more suitable and practical for the B van. Would look a lot better too, imho. Haven't we all lived on LI at some point in our lives?
New England Unit
Metropolitan NY Unit