Rasmussen 24" Calico Mix Alterna Ventless FireStones Double Sided - DF-AFS24-CX features a vibrant mix of natural tones, adding depth and warmth to both sides of your ventless fireplace. Made from durable ceramic-bonded refractory material, this multi-tonal set is heat-resistant and crafted for lasting quality without cracking. Perfect for concealing burners, this Calico Mix set complements rustic and transitional spaces. Compatible exclusively with Rasmussen Alterna Vent-Free FireStones Burners (sold separately).