Abstract: A chassis for housing components includes a shell having an intake duct and an exhaust duct. The intake duct is coupled to an intake port for directing cooling air from the intake port into the chassis, and the exhaust duct is coupled to an exhaust port for directing cooling air out of the chassis. The intake duct and the exhaust duct include active and/or passive noise attenuating features for attenuating noise generated within the chassis, which allows the chassis to operate more quietly. The ducts are also dimensioned to attenuate electromagnetic radiation generated within the chassis, which prevents the escape of electromagnetic radiation from the chassis.

Abstract: A radiation fin assembly formed of a number of radiation fins connected in parallel, each radiation fin having a plurality of flat peripheral connecting strips, each flat connecting strip having a hook hole and an arrowhead-like hook portion; the arrowhead-like hook portions of the flat connecting strips of one radiation fin being respectively hooked in the hook holes of the flat connecting strips of another, keeping the radiation fins connected in parallel.