The retainer is open sided, and has upper and lower walls with {HEAD ~ notches} for snapping into place in {TAIL ~ an aperture} in a mounting channel in which the shelf bracket is mounted and in overlying relation to said bracket 
for snapping in
The retainer is open sided , and has upper and lower walls with { HEAD ~ notches } for snapping into place in { TAIL ~ an aperture } in a mounting channel in which the shelf bracket is mounted and in overlying relation to said bracket
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH