The Gutter Flow by Gutter Flow LLC channels rainwater to your downspout without clogging, keeping gutters and downspouts flowing. No more plugged downspouts! The Gutter Flow uses a unique design incorporating temperature control, airflow venting and rain water inlets. The black finish increases the Gutter Flow temperature, therefore drying debris faster and allowing it to blow away with the wind. Airflow venting promotes air drying and allows for additional drainage. Inlets let the water in and keeps leaves and debris out for continuous water flow. Made in the U.S.A.