Designed with a variety of performance increasing and noise reducing features this fan can move an amazing amount of air compared to other fans at the same minimal noise level the hf 14 comes with two sets of solid vibration dampening rubber corners one for standard 140mm fan hole spacing 125mm and one compatible with the standard 120mm hole spacing 105mm the venturi high flow series fans are ideal for those looking for a perfect balance between high performance and low noise built f