Rubbermaid 3D30-LW-WHT C Shelf Clamps Bag of 20 - Walmart.com
Amazon.com: Tighall 2PCS Adjustable C-Clamp Bracket Clamp Iron Heavy Duty Mount Desk Partition Clamp, with Wide Jaw Openings for DIY Open Shelf Brackets, Include Screws : Tools & Home Improvement
Shelving for ScienceDesk™ Workstations
Shelf and Corner Clamps
WilliamsWare Stackable Shelf Clamps 4 Pack - Black | Howards Storage World