Super easy to fit, and the different mounting kits are a dream to use. I am slowly swapping all my fans over to these. Only downside is the price, for a lot of people, they would never spend this much money on a fan, but trust me, give them a go. If they were £3-£4 cheaper i would have replaced my whole system by now :) and given a 5* rating. They are Whisper quiet, even at high speeds, and the airflow through it is a lot more than the fan i replaced with it. My system temperatures dropped by 3 degrees with just changing this one fan.