Abstract: Modular electronic instrument cabinets are provided with supporting members extending between a front panel and a rear panel to form a frame. The supporting members have first grooves in which edges of closure members are slidably and removably positioned and second grooves in which edges of trim, trim and positioning strips and trim and interconnecting or interlocking strips are received to provide a cosmetic appearance to the supporting members and cabinet, to position cabinet feet and other elements and the interconnect or interlock adjacent cabinets of similar construction together in a rack and/or stack configuration.