The 5-FAN-K is a fan kit designed specifically for Slim 5 Series racks. The kit includes two 4.5in fans with vent blockers, a power cord, and mounting hardware, making it a complete solution for those who need to add cooling to their Slim 5 rack. The fan kit fits perfectly in top knockouts on Slim 5 racks or in the top of rear access panels. It includes fan guards to ensure that your equipment stays protected while still receiving optimal airflow.The 5-FAN-K is a fan kit designed specifically for Slim 5 Series racks. The kit includes two 4.5in fans with vent blockers, a power cord, and mounting hardware, making it a complete solution for those who need to add cooling to their Slim 5 rack. The fan kit fits perfectly in top knockouts on Slim 5 racks or in the top of rear access panels. It includes fan guards to ensure that your equipment stays protected while still receiving optimal airflow.