A holder for electronic shelf labels includes a channel having upper and lower ledges with upper and lower gripping flanges defining an engagement space into which a back of the electronic shelf label is mounted. A fin extends from a backplane of the channel, the fin having one side perpendicular to the backplane. The front of the upper and lower gripping flanges have inwardly-directed bevels. A breakaway guide is connected by a thinned portion to the backplane to engaging an edge of a mounting structure. The breakaway guide is removable following mounting of the channel.