The Rasmussen 24" Dark Gray Alterna Ventless Uniform FireBalls Single Sided (AFB24-DG) bring a sleek, modern touch to ventless fireplaces, offering a bold alternative to traditional gas logs. Made from heat-resistant ceramic-bonded refractory material, these fireballs are built to withstand high temperatures while effectively concealing the burner for a fuller look. The dark gray finish enhances the flames with a sophisticated contrast, creating a striking visual. Specifically designed for use with the Rasmussen Alterna Ventless FireBalls Burner (sold separately), this set is a stylish addition to any contemporary indoor space.