Smooth Copper Cup Rain Chain – High-Flow 5/5 Design
Smooth Cups #3105-COP – Pure Unfinished Copper
A clean, architectural rain chain designed for serious water handling. These large smooth cups are made from thick pure copper and shaped to guide heavy roof runoff downward with less splash than an open-link design. A folded lip around the top adds rigidity, while the generous cup size makes this one of the strongest choices for homes that regularly see heavy rainfall.
With a 5/5 Waterflow Index, this design is especially well suited to Hawaiʻi’s tropical downpours. The simple profile works with modern, tropical, Craftsman and traditional homes without competing with the architecture.
FREE SHIPPING TO HAWAIʻI. Get a premium solid copper rain chain delivered without the mainland-to-Hawaiʻi shipping surcharge commonly added to island orders.
The copper is unfinished and uncoated, so it will naturally deepen in color outdoors and gradually develop a distinctive patina. A matching copper V-hook is included for installation.
For a cleaner gutter connection and maximum water-flow efficiency, add a Rain Chain Installation Kit.
Technical Specifications
| Material | Pure unfinished copper |
| Waterflow Index | 5/5 |
| Cup width | 4 3/8 in. |
| Cup height | 5 1/2 in. |
| Bottom opening | 1 1/2 in. |
| Standard length | 8 ft. |
| Cups per 8 ft. | 13 |
Built for Heavy Rain
The large smooth cups are engineered to perform across a wide range of rainfall conditions. For Hawaiʻi homes where roof runoff can become intense quickly, this is an excellent option when function is just as important as appearance.
Custom lengths are available by the foot.