The invention relates to an equipment housing, in particular the housing of a blood treatment device, having a housing wall 10 and a closing flap 20 for closing an opening in the housing wall 10, said closing flap being rotatably mounted with respect to a coupling element 30 via a second pivot 34, whereby the coupling element 30 is rotatably mounted with respect the housing wall 10 via a first pivot 12, whereby 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 14 in the housing wall is not closed. (Fig. 1)
