Here is a certainly case where a Top-mount Talker or Signholder would work better than a Bottom-mount. And the Pushbutton itself seems to be the design recommended for use on Pegboard, not shelf edge perforations. Consult with your manufacturer on correct mounting and use of Signholders and Pushpins. Ask for samples and field test. *****
CLICK the thumbnail for a closeup look of the pushpin. SEARCH “Failed” for fixtures falling short of the mark.