With this set of four special fan brackets allow one or two slim fans with typical 120-mm holes fix (about 105 mm spacing) on Prolimatechs CPU cooler Megahalems and Super Mega. Consequently, for example, a team of two fans of the type Ultra Sleek realize vortex of a Prolimatech Megahalems and Super Mega, so that a fan blows, the other at the same time sucks. Equipped with PWM control Sleek Ultra Vortex is only 15 mm thick, has 120 holes of counterparts and by the combination two of these rotors in a sandwich arrangement, the cooling capacity can be increased again. Specification:- Fan compatibility: 2x 120 x 120 x 15 mm or 140 x 140 x 15 mm with 120 mm holes (Prolimatech Vortex Ultra Sleek 140 mm)- Cooler Compatibility: Prolimatech Megahalems and Super Mega (all variants)