This Nautilus Shell Metal Wall Art is constructed of 18 gauge steel on a Fiber Laser and then Powder Coated to give this item a one of a kind, unique finish. - Indoor/Outdoor Safe: Each product is clear coated, making it weather-proof - Product fully designed and produced in the US -Strategically placed mounting holes designed for easy and level placement on your wall - We guarantee our work and offer a two year warranty on all of our products; if your product rusts or fades, we will replace it, no questions asked! Dimensions: 12" x 10" 18" x 15.25" 24" x 20.25" 30" x 25.25" 36" x 30.25"