The Rasmussen 21" Light Gray Vented Uniform FireBalls - FB21-LG bring a sleek, contemporary vibe to your fireplace. Crafted from durable ceramic, these fireballs feature a light gray, heat-resistant stain that adds a touch of modern elegance. Designed to conceal the burner, their uniform shape creates a clean, minimalist aesthetic. Ideal for both home and commercial settings, these fireballs are compatible with Rasmussen Vented Custom Pan Burners (sold separately).