The Rasmussen 30" Natural Alterna Ventless Uniform FireBalls Single Sided (AFB30-NA) bring a contemporary, understated style to ventless fireplaces, serving as a modern alternative to traditional gas logs. Crafted from heat-resistant ceramic-bonded refractory material, these fireballs are designed to withstand high temperatures while providing a fuller look by concealing the burner. The natural finish complements any decor, adding a subtle yet sophisticated touch. Exclusively compatible with the Rasmussen Alterna Ventless FireBalls Burner (sold separately), this set enhances the beauty and functionality of your indoor fireplace.