Toby, I replied to your PM. Julian is right on. Model #240. 1250 cfm each side if I remember correctly. You will not have an extra inch of space at the bottom. The rubber seal around the fan shroud fits almost perfectly over the rad. I did not fasten the fans at all. Held in place by the bottom rad brace and the top cover plate. Definately do NOT use the plastic through the core anchors. If I can get a descent pic I will post it here. This is a really good alternative if you do not want to install a lay down with suckers.