A multi-patented pro-grade stainless steel micro-mesh gutter guard that keeps leaves, pine needles and small roof sand grit out of your gutter. We use marine grade, high corrosion resistant type 316 stainless steel, which is a much higher grade than our competitors that use a non-marine grade, low corrosion resistant type 304 alloy. UL Certified for rainwater harvesting. Installs on any type of gutter and roof type. Does not void roof warranties.