Self-Flushing Rainwater Diverter

This works w/ the square downspout style like:
https://www.lowes.com/pd/Amerimax-Contemporary-120-in-White-Downspout/1000244867

I designed it so the filter is self-flushing in moderate rain, and to block insects (1mm spacing).

EDIT / long term review: Still going strong after 3 years, >1,000 gallons collected. Never clogged, plastic is fine, even exposed to the sun.