Project Source 12.8-in L x 0.94-in W x 12.8-in D White Shelf Bracket (5-Pack) in the Shelving Brackets & Hardware department at Lowes.com
Ekena Millwork Steel Hanging Shelf 12-in x 2-in x 7-in Stainless Steel Countertop Support Bracket in the Angles, Brackets & Braces department at Lowes.com
Style Selections 9.06-in L x 0.98-in W x 6.54-in D Black Shelf Bracket at Lowes.com