Guards by The Wedge. Details:Full gutter guard systems cost thousands of dollars to install. The Wedge Downspout Gutter Guard provides an alternative solutions at a fraction of the cost. The patented flow-thru design of the Wedge directs leaves and debris to float up and away from the downspout opening, keeping it clear so rainwater can drain quickly and efficiently. Independently tested by Consumer Test Labs, The Wedge Downspout Gutter Guard is sloped to allow water to flow through the top, bottom, both sides and back, providing increased drainage over conventional rain gutter filters. Designed to fit and tested to function on 5 inch gutters with standard downspouts with a 2" x 3" opening.