The Rasmussen 20" Natural Alterna Ventless Uniform FireBalls Double Sided (DF-AFB20-NA) bring a clean, modern look to ventless fireplaces, providing a contemporary alternative to traditional gas logs. Constructed from heat-resistant ceramic-bonded refractory material, these double-sided fireballs are designed to withstand high temperatures and deliver a fuller appearance by concealing the burner. The natural finish enhances versatility, making it a perfect match for any decor. Specifically compatible with the Rasmussen Alterna Ventless FireBalls Burner (sold separately), this set combines style and functionality for an inviting fireplace display.