I bought these from coolerguys! They rock! Fast shipping and good email responce. The fan is a 52cfm 60mm x 60mm x 38mm delta which cools around 6F better than my smaller old fan and bairly louder! The skull grill rocks! I looked around and saw everyone else had the biohazard and radiation fan grills so I decided to go the other route Hope ya like the new mods! hehe