Well, the window cleaning warehouse fitted it. And thats how they do all their vans for their cleaning company "crystal clear". I feel safe with it and have had to brake very hard from high speed a couple of times due to crazy drivers and it hasnt moved an inch. I feel that it is a safe way of fitting your tank but I am soon to get a cage, not just because its more secure but because it will help make good use of the space in my van. I would prefer to be over the top when it comes to safety, and while feeling safe how it is I just want the best I can get, Luke