We have a Vision on our 410. Bit of a fiddle to erect if you're not on dead flat ground. The front hoop that provides the frame has slide out feet to adjust for ground levels, but in order to the tension right the relationship between the hoop and the awning rail has to be correct. I think it once took 20 minutes to get right. You also need to be careful with height of the front hoop to make sure that the van door can open, but also as mentioned to make sure water can drain away. The centre roof strut needs an awning socket screwed into the rail but is an expensive addition to a costly item.