Silence is stylish with the Sonata Plus 550 from Antec. This mid-tower case minimizes noise while still maintaining a stylish elegance. A 3-speed TriCool 120mm exhaust fan pulls air out of the case keeping things cool. You get a choice between maximum quiet and maximum cool. The air vents on the sides of the front bezel have a washable air filter to minimize dust in the system. A 92mm fan is mounted at the front of the case for dedicated hard drive cooling.