The copper core HX-CU1020H provides an approximate 1000W of added heat dissipation when coupled with three 120mm fans. Offers excellent performance with low air flow. Horizontal (parallel) G 1/4 BSP threaded nozzle sockets, nozzles not included. 32mm (1.26") long mounting screws are included. Dual pass, brass pipes, 15mm (0.59") fan hole spacing. Overall dimensions 5" x 1.7" x 16.5".