Leaf Relief gutter guard corners are completely weather and 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 5" gutters. Mounts directly to gutter, no lifting shingles, which could void your roof warranty. Patented Aluma-Perf technology keeps leaves, needles, seeds, and twigs out, and off, in normal wind conditions. Sturdy aluminum construction. White.