Protect equipment from the damaging effects of heat from servers, NVR’s and DVR’s with the adjustable 6 fan High CFM Rear Door. This cupboard style split rear door pulls hot air from the rear of the cabinet and directs it up towards return air ducts. Fan placement is adjustable for optimal airflow and up to 10 additional fans can be added for 3,520 CFM of free air movement. Two adjustable half blank panels included for versatile fan arrangement. Additional half blank panels are available for greater control of fan placement. - Removes heat from high density installations such as servers and DVRs - Split rear door design pulls hot air from rear and directs it upwards - Fan placement is adjustable to match project needs - Comes with 6 fans, together rated at 1,320 CFM in free air - Up to 10 additional fans can be added for up to 3,520 CFM of movement