The copper core HX-CU420H provides an approximate 400W of added heat dissipation when coupled with one 120mm fan. 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. Overall dimensions 5" x 1.7" x 6.4".