This large-scale extrusion makes a simple shelf or tray for mount on wire grid, and if dimensioned correctly surely, endcap, slatwire, slatwall and more.  Its beauty is its simplicity, and one assumes, easy of manufacture, low cost, and ability to effortlessly cut to custom lengths for any display need. Note that in the photo the lower flange that would normally grip a wire, has been pulled in front of the grid for visibility.

For other tray-like outfitting SEE…
Bath-and-Body Slatwall Trays
Sunglasses By Slatwall Tray
Slatwall or Tower Hat Tray