VIVO Overhead Desk Shelf: Transform your workspace by elevating accessories above your monitor screen(s) for added organization and display options. Supports up to 22 lbs in weight for a secure setup -Patent Pending- Sturdy Steel Clamps: Attaching to desktops 44' or longer, this 42' x 12.3' raised platform provides a spacious canopy for convenient accessory storage. The low-profile C-clamps fit table tops up to 3' thick