tapes or other adhesives a shim can be placed on the bottom of the extended leg of the t molding to raise the height either a snap on type of shim or a simple rectangular piece of material which can be adhered onto the bottom of the foot and then the assembly is adhered to the floor fig2 through 27 can represent either installation method with a track or with an extended leg on the t molding for t molding bard surface reducer carpet end molding and stair nosing in the embodiments of fig2 and 23 the pieces are provided with a horizontal flange 111 and the molding 11 has a similarly shaped groove in fig2 the groove is not provided with any locking elements while in fig2 the groove is provided with a locking flange 121 which joins with a locking groove 112 on the second member to hold the pieces together although not specifically shown it is within the scope of the invention to swap the location of the tongue groove such that the tongue is on the molding 11 and the groove is positioned on the second member similarly there may be any number of matching tongues grooves and each piece may have any combination of tongues and grooves similarly as shown in fig2 the tongue and groove need not be positioned adjacent to the underside of one of the arms of the molding 11 and a gap 114 may be provided in the second member to allow for greater movement between the second member and the first member without permitting dissociation this gap may be a break away feature in fig2 a recess lateral slot is present on the underside of the.