Only Hangers 2 in. Gridwall Hooks for Grid Panel Display 1/4 in. Dia Wire (50-Piece) 14-002BLK(50) - The Home Depot
grid hanger - hanging hardware - Popco
Only Hangers 72 in. H x 24 in. W Grid Wall Panels for Retail Display (3- Grids) Black 1900BLK - 3PCS - The Home Depot
Amazon.com: Only Hangers Gridwall Durable Metal Photo Frame Utility Notch Display Hook Hanger for On Center Grid Panel Display, Black (25 Pack) : Industrial & Scientific