The copper core HX-CU1020V provides an approximate 1000W of added heat dissipation when coupled with three 120mm fans. With a high fin density of 30 FPI (fins per inch), it offers best performance at higher air flow. Vertical (perpendicular) G 1/4 BSP threaded nozzle sockets, nozzles not included. 30mm (1.18") long mounting screws are included. Dual pass, 15mm (0.59") fan hole spacing.