use the clip member 46 it is inserted into the c shaped stud 12 by sliding it in from the top edge 28 and top portion 30 see fig5 as can be seen the web 48 will slide against the stud web 18 and narrow flanges 58 will ride against the narrow flanges 20 the end lip recess 76 is wide enough to accommodate the end lips 22 of the stud 12 such a fit as just described will allow the clip member 46 to move up and down in the stud 12 yet prevent horizontal dislodgment by the lips 22 being located in the recess 76 in order to secure the clip 46 to a top track 16 fasteners 20 see fig5 will pass through the exterior parallel leg 82 of the u shaped top track 16 and into the wall extensions 74 in some cases the fasteners 80 may be self taping and make the openings in the walls 82 and extensions 74 as they are inserted while two fasteners 80 are illustrated for each side one on each side may be sufficient as can be seen with a plurality of clips 46 positioned in adjorning studs 12 the top track 16 attached thereto floats on the studs in.