Use the Amerimax 3 ft. Hoover Dam Gutter Guard to help protect your gutters from the heaviest of debris. These gutter guards are compatible with 4 in., 5 in. and 6 in. metal K-style gutters. The innovative dam design keeps the heaviest of rainfall flowing into the gutter and allows any accumulated debris to dry up and blow away, for minimal maintainence. Easy to install - simply slide the flat side under the shingle and screw the gutter guard to the front edge of the gutter. Made of durable powder-coated steel for long life and protection from the elements and neutral color blends seamlessly with roof line. Includes a 15-year limited warranty. Features: Compatible with 4 in., 5 in. and 6 in. metals (steel or aluminum) K-style gutters Designed to handle the heaviest of debris and keep out all types from broadleaf to finer particle Innovative dam design keeps the heaviest of rainfall flowing into the gutter and allows any accumulated debris to dry up and blow away, for minimal maintenance Constructed of durable powder-coated steel for long-life and protection from the elements and neutral color blends seamlessly with roofline Easy installation - simply slide under the first row of shingles and screw the gutter guard to the front lip of the gutter with self-tapping sheet metal screws Includes 15-year limited warranty