I recently replaced my old HSF with some new ones. I also bought the wrong size HSF for my board. Willing to part with these. 2 Brand new 4.1" down blowing HSF - Comes with all parts. Can't return these since they were open box. 2 Used 3.5" side blowing HSF - Have had them in my box for a year. Decent, but loud. I want to get rid of these. Dan