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. Our 5 in. K-Style gutter has a hemmed back edge and can be used in new construction or in renovation projects. Hemmed gutter has a bent metal back edge for stiffness. This style gutter can be installed with either visible and hidden hangers. - Amerimax 5 in. K-Style Aluminum Gutter - 21 ft. Section, Brown