Light Gray Alterna Ventless Uniform FireBalls Double Sided (DF-AFB30-LG) offer a sleek, modern aesthetic to ventless fireplaces, serving as a stylish alternative to traditional gas logs. Crafted from heat-resistant ceramic-bonded refractory material, these double-sided fireballs are built to endure high temperatures while providing a fuller look by concealing the burner. The light gray finish adds a refined, contemporary touch that complements various decor styles. Exclusively compatible with the Rasmussen Alterna Ventless FireBalls Burner (sold separately), this set enhances both the style and functionality of your indoor fireplace.