Folding Brackets-Choose your size | Rockler Woodworking and Hardware
Everbilt 16 in. Matte Black Heavy-Duty Folding Shelf Bracket 14070 - The Home Depot
Amazon.com: Folding Shelf Brackets - Heavy Duty Metal Collapsible Shelf Bracket for Bench Table, Shelf Hinge Wall Mounted Space Saving DIY Bracket, Max Load: 150 lb 2 PCS (10 Inch, Black) :
Amazon.com: 2PCS Folding Shelf Bracket, Wall Mount Support - Heavy Duty Fold Table Hinge Brackets - Polished Stainless Steel Spring Loaded Supports for Undermount Sinks, Microwave, Beds and Other Furniture : Tools