SnapMount VESA Monitor Bracket - Aluminum | Ricmotech
Best monitor arms for Mac (or PC) external displays - 9to5Mac
Amazon.com: VIVO Aluminum Ultrawide Monitor Stand, Classic, Fits up to 49 inch Computer Screens, Single Articulating Pneumatic Arm, C-Clamp and Grommet Desk Mount, Max VESA 200x100, Black, STAND-V100H : Electronics
Triple Monitor Stand - Plate Kit & Plans - 15, 25, & 40 Series – Open Sim Rigs
Triple monitor stand build using 15 series aluminum profile - YouTube