Vertical Hydroponic Tower- Cap for 2x3In Downspout Gutter

This is a cap I designed to fit atop a 2in x 3 in downspout connector. There are two files- one is for a single hydroponic tower (solid, no hole) and the other is for a tower array that feeds the tower from the top (0.72inch hole in cap). The hole is wide enough for a tube that has an outer diameter of 0.72 inches (or ½" irrigation tubing). 

The solid caps allow the pumped water within the tower to splash against the underside and flow on top of a diverter to be split to either side of the tower.