creak

Hey everyone I have an issue, I've already bought P3 case, and the pack of 3 air coolers of Riing rgb 12 The problem is that I can't find where to put them, I mean there's no place to put the screw Do I have to get a 360 mm radiator? Will it surely work with that? Or is there a way to put the coolers in the chassis w/out having to buy the radiator?