The Zip Hinge is designed to flip your gutter extension vertically and out the way when needed. The Zip Hinge is designed to fit any size rectangular downspout and can be painted to match any color. The Zip Hinge is installed by attaching one side of the hinge to the downspout coming down from the gutter and attaching the other side of the hinge to the extension. The Zip Hinge is manufactured from heavy duty aluminum.