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