The Black Box WMD-1075FAN-U 100 CFM 4-in. Fan Kit increases airflow within a wallmount cabinet to help cool your equipment. For use with 115V power, it features a 6-ft. 1-15P power cord, and comes with a mounting plate and hardware for installation in your cabinet. Also included are two blocking plates for sealing off select venting holes to optimize air flow through the cabinet. Replacement air filters can be purchased separately to keep your fan running at optimum efficiency.