2x3 Downspout Strap

I'm not sure what downspouts wnnorton designed mounts for, but none seem to fit the 2x3" downspouts that are common in the U.S.. I made a few small changes to the CAD file to adapt to holding a 2x3" downspout flat against a wall.

Strap is symmetric. Photo of the strap on white background looks asymmetrical only because it was photographed at an angle.