Gutters act as a part of a rainwater drainage management system. Uncontrolled rainwater from the roof can damage your foundation, cause siding and wood rot and encourage interior mold and mildew. This sections with outlet has the 2 in. x 3 in. downspout outlet installed to make your gutter project easier. Connect one end of the section to the gutter and to an end cap on the other for most installations. - Amerimax 5 in. K-Style Aluminum Gutter End Section w/Outlet, White