These brackets will fit the 2"x3" vinyl downspouts sold at Lowe's or HomeDepot. They should work well for a hydroponic setup or on the side of your house.

My hydroponic system is mounted horizontally on supports instead of vertical like the original so the mounts needed to be changed slightly. I made the adjustments using TinkerCAD.

This is a remix of Hydroponic NFT Downspout Brackets by @GMoi. His end caps are spot on.

If this design/remix helped you out, consider buying me a coffee