Amerimax White Catch A Raindrop Harvesting Rainwater Colander is made of plastic and fits most residential 2 x 3 downspouts. This colander captures 50% of rainwater while debris is directed down the gutter, diverting filtered rainwater into a storage tank or rain barrel or directly to a garden. It helps filter large debris from water flowing through your downspout to help prevent clogs in the system. Easy to install with a snap-in design, it can be reused to water houseplants, gardens, landscape, or wash cars. Plants love the pH neutral, fluoride- and chlorine-free water, and it diverts water away from your home's foundation. Attach to a regular garden hose or use the cap.