has lip 13 it would be understood by one of ordinary skill in the art that the bracketing system 30 described herein can work for its intended purpose with either c channel or u channel frames fig1 shows a bridge backing member 20 mounted between two bracketing systems 30 bracketing system 30 is mounted to each of two vertical studs by 10 attachment means 70 shown in fig6 as shown more particularly in fig2 and 3 each bracketing system 30 includes a left bracket 40 and a right bracket 50 connected by adhesive material 60 the u201c left u201d and u201c right u201d designations are for ease of reference only and are not meant to limit the orientation of the respective brackets left bracket 40 has a first left plate 42 joined to a second left plate 44 right bracket 50 has a first right plate 52 joined to an elongated second right plate 54 the second right plate 54 has a groove 56 therein that runs substantially along its length and parallel to first right plate 52 dividing second right plate 54 into two sections 54 a and 54 b left bracket 40 is connected to right bracket 50 by adhesive material 60 that attaches to the sides of second left plate 44 and second right.