Made of 100% 304-alloy stainless steel, right down to its pointed, slotted, hex-head set-screws,or in galvanized painted black. The one-piece, 8" high screen is heavy, 18ga., 3/4" or 5/8" mesh, and the top is hand finished with a rolled edge. The sturdy base also features a one-piece design and includes weld nut technology to prevent stripped threads. The HomeSaver Chimney Cap has a clean, stylish design that shouts "Pro" from top to bottom, The all-stainless HomeSaver Chimney Cap comes to you with a lifetime warranty for any type of fuel being used. Galvanized caps carry a seven-year warranty against workmanship and materials, and they have a three-year warranty against rust-through.