Increase Ventilation and the Flow of Fresh Air Through Your Enclosed Space. This SmartRack exhaust fan is ideal for maintaining a constant flow of air within your small wiring closet. Better airflow keeps your valuable rack components cool, helps boost system performance, and avoids costly equipment failures that lead to downtime, damage and data loss. Powerful 120V Fans and Filter Provide a Proper Draft of Clean AirTwo high-performance fans mount on either side of the wall of your wiring closet to either pull warm air from the inside or draw cool air from the outside. The high-speed ball-bearing 120V fans are capable of circulating air at 475 cubic feet per minute (CFM). The unit comes with a replaceable filter for keeping dust away from your electronic equipment.Easy and Flexible InstallationA mounting template is included for installing the SRCLOSETFAN between studs on walls up to eight inches thick. Mounting hardware is also included. The 15-foot power cord with NEMA 5-15P input is long enough to allow use in rooms with high ceilings. A convenient on/off switch allows one-touch control.