The ultra-quiet blower system is designed to cool home theaters, entertainment centers, and audio video cabinets. The unit's low-profile design is ideal where mounting space is limited or a smaller footprint is desired. Features a speed controller and 6 foot power cord. Included fans use a custom motor engineered to minimize noise during speed variations and are certified by CE and RoHS. Contains AC Infinity axial fans ACX-FBD1225(B)05W5 which meet UL-507 standards for safety under Underwriters Laboratories certificate E503903. Contains AC Infinity axial fans <> which meet UL-507 standards for safety under Underwriters Laboratories certificate E503903.  Containing dual ball bearings rated at 67,000 hours, the unit can be mounted in any direction. Features a CNC-machined anodized aluminum frame with a modern brushed black finish. Blowers are set to exhaust air out of the enclosure. Includes all necessary hardware to easily mount the unit onto a cabinet and power it through an USB port or standard wall outlet.