IEC 60917-2-5:2012 applies to a frame-based cabinet structure with the specification of interface dimensions for the installation of miscellaneous equipment. The frame structure provides the mounting planes with mounting points for the assembly of internal and external accessories. Unlike the existing standards IEC 60917-2-1 and IEC 60297-3-100, this standard allows cover parts like top covers and front/rear doors to exceed the cabinet's external coordination dimensions. Keywords: Modular cabinet, cabinet mounting, frame-based