Building a triple monitor stand using 15 series (almost the same as 40 series) extruded aluminum otherwise known as 8020.
My apologies for the less than professional filming and audio.

Parts list
2 x 48 inch 15x30 for vertical posts
1 x 48 inch 15x30 for central monitor section
2 x 24 inch 15x30 for the side monitor sections
2 x 25 inch 15x15 for the feet
4 x 1x1 brackets for connecting the feet to the vertical posts
2 x 4x4 brackets for connecting the central monitor support to the vertical sections
2 x 15 SERIES 3″ PIVOT NUB FOR DYNAMIC PIVOTS
4 x 5 SERIES 1.5″ PIVOT ARM FOR DYNAMIC PIVOTS
24 T-nuts and screws
3 x 100x100mm Vesa Bracket https://www.amazon.ca/gp/product/B006...