Leaf Relief’s patented design allows water to flow freely while debris is lifted away from gutters with a gentle breeze. Independent testing proves Leaf Relief® is 100% effective against leaves, twigs, pine needles and small debris. Leaf Relief handles up to 29.7 inches of rainfall per hour. That’s almost three times the official rainfall world record (Kilauea, Hawaii at 12 inches per hour). Virtually Eliminates Maintenance. Solid aluminum construction. No rusting. No distortion. No painting. Completely Weather & Pest Resistant Mounts securely and stays firmly in place to resist high winds, heavy amounts of snow and ice, ladder damage and pest invasion. Fits Standard Gutters. Available in 5″ and 6″ sizes to fit new and existing gutters. Also Available in Copper. 5″ and 6″ retro-fit copper for most existing gutter systems. Simple Installation. Mounts directly to gutter. No lifting shingles…which may cause other repair headaches or void your roof warranty. Keeps Water Flowing. Patented Aluma-Perf™ technology keeps leaves, needles, seeds and twigs out…and off…with a gentle breeze.