An equipment housing, in particular the housing of a blood treatment device, having a housing wall and a closing flap for closing an opening in the housing wall. The closing flap is rotatably mounted with respect to a coupling element via a second pivot whereby the coupling element is rotatably mounted with respect to the housing wall via a first pivot. With the two pivots, the closing flap 20 can be disposed in at least a second and a third opened working position, in both of which positions the opening in the housing wall is not closed.
