and 31 are formed into a substantially rectangular configuration which are in parallel spaced planes with the ends of the center portion 33 extending to and against the inside surface of members 26 and 27 fig7 illustrates a t shaped hanger 34 the leg 35 of which is provided with a plurality of like or different size apertures 36 extending therethrough along its length for receiving and supporting one or more conduits wires pipes 37 slots 38 or the like which are shown in dash lines in fig8 for purposes of illustration each hanger is provided with a catch or snap clamp 40 for snapping over the center portion of stiffener member 28 of the stud assembly fig9 12 illustrate a modification of the stud shown in fig2 8 wherein like parts are given the same reference characters this stud 41 differs from stud 25 in the design configuration of the stiffener 42 which comprises an elongated v shaped trough 43 having at each end thereof foot configurations 44 and 45 extending laterally thereof in parallel planar configurations each foot comprises a flat planar configuration the side edges of which fit into and interlock or attach with notches 32 formed in the corners of members 26 and 27 as heretofore described for the structure shown in fig2 8 fig1 15 disclose a further modification of the studs shown in.