Dual Mega-fan AV cabinet cooling fan system with Digital thermostat & multi-speed (white model) This cooling system is designed to be mounted in your enclosed equipment cabinet or computer desk. It will quietly exhaust the hot air outside, or pull cooling air into the cabinet -- you choose how it is set up. It has 2 high-quality, low-noise 120mm fans, with long-lasting and quiet fluid dynamic bearings. The two fans are integrated into a single mounting plate, to make installation easy. The system also includes an adjustable digital thermostat. In addition, YOU control the fan speed, using the multi-speed fan controller. Recommend fan speeds for this system: The fans (running together at 2/3 speed) are rated at 19db while moving 98 cubic feet of air per minute, or 22db & 110CFM at 3/4 speed. With cabinet cooling, slow (and quiet) are the way to go! Other available speeds: 1/3 speed = 13db/50CFM, 1/2 speed = 16db/72CFM, Full speed = 25db/148CFM. The 120mm Mega-fan dual-fan cabinet cooling unit measures 6-1/4" high x 11" wide (includes the mounting plate), and the required hole is approximately 4-7/8" high x 9-3/4" wide. The unit is 1-1/4" thick behind the mounting plate, and only requires about 1/3" additional space for airflow. This model has a white mounting plate and front grill, and stainless silver screws on the front. The back (non-visible) side is black.