Rasmussen 24" B/N/AR Mix Alterna Ventless FireStones Single Sided - AFS24-BNR offers a vibrant blend of brown, natural, and adobe red firestones, adding warmth and color variation to your ventless fireplace. Made from high-quality ceramic-bonded refractory material, this set is heat-resistant, ensuring lasting durability without cracking. Perfect for concealing burners, this multi-tonal set enhances rustic and transitional decor. Exclusively compatible with Rasmussen Alterna Vent-Free FireStones Burners (sold separately).