Its simple and modern design, this 18 In x 16 In stainless steel fireback makes your fireplace more efficient in heating the house. The fireplace fireback absorbs the heat and then radiate the heat directly into the room. Constructed of 14-ga., 304-alloy stainless steel, this Radiant Fireback weighs about one sixth the weight of a cast-iron fireback. Each fireback has a gentle curve applied to its back. This pre-stresses the fireback to minimize warping. This fireplace fireback features slotted support legs that allow you to adjust it to three angles: 65, 75 and 90 degrees. The legs are 1" high, 2 3/8" wide and 9" long.