I returned this after opening it at store. This seems to require a "universal" rack and as there was NO information whasoever as to how it mounts, I just said forget it. If I had known I would have got it all.
Looking at it , it was good sized and has a small wire loop on the underside that will most likely help keep it attached to a universal bracket, but you may want to bungie it as well. Hope this helps anyone interested.