This all 304 stainless steel burner burns cleanly with glass/gems directly on burner ports, providing a beautiful sea of flames. Only 10½” front-to-back, the mirrored front and back panels create a high and deep flame appearance. With its sleek lines, wide variety of choices for accessorizing (many unique colors in Fyre Gems and Fyre Glass), and a striking polished mirror finish, the G21 is the perfect addition to any contemporary hearth.