A chain downspout (also called a rain chain) is an alternative to a traditional metal downspout. Instead of a closed pipe, the gutter water flows down a decorative chain—sometimes a simple link chain, sometimes a series of little cups. How It Works • Water exits the gutter outlet. • It follows the chain downward due to surface tension. • The chain guides the water into: • a drain, • a splash pad, • a barrel, • a rock bed, or • a planting area. No enclosed pipe needed. Pros • Looks way better tha