Galvalume Close Color 16 Gauge Galvanized Steel with Clear Powder Coat No Rust No Corrosion Patented Design Snow Guard EPDM Rubber Seal with No Caulk Needed... Also Known as Sno Defender, Snow Gards, Birds, Shoes, Blocks, and Jacks. Whatever the Name, These Snow Guards are of The Highest Quality and Made by The Amish Community in the USA! Where Quality Matters. Keeps Snow From Sliding Like an Avalanche Off Your Metal Roof. This Style is Not For Standing Seam Metal Roofs. Stainless Steel...No Rust....No Corrode Amish Handmade in The United States Patended Design Snow Guard Purchase 1 or 2000 Case Quantity is normally 100 EPDM Rubber Seal...No Caulking Needed...Save Money and Mess