Abstract: The invention relates to a casing for electrical and/or electronic components, in particular computer equipment, with an improved cooling. The casing comprises a frame and a number of walls in which suction openings and outlet openings for the cooling air are formed, and wherein the suction opening is provided with filter material. The casing is provided with a number of fans placed between the suction openings and the outlet openings, whereby a flow with a radial or centrifugal component is generated. Each fan can be connected to an associated electrical and/or electronic component via a connecting part and/or a hose, while a cooling block can further be connected to each electrical and/or electronic component. The invention further relates to a fan, a cooling block and a connecting part for use in such a casing.