Sno Shield Rib Guard Clamp on Snow Guard (10 Pack); This Product Is Equal to Other Snow Retention Products Known As: Snow Cleats, Snow Brakes, Snow Trapper, Clamp-on Snow Guards, Seam Mount Snow Guard, Standing Seam Clamp, Clamp to Seam Roof Clamp Attaches to standing seam ribs without penetrating the panel Made from durable, virgin grade, UV stabilized polycarbonate Can be attached in any weather Y-shaped design for more effective collection of snow Uses no adhesives for quick and clean installation