The Opti-Myst Series puts a spin on your standard electric fireplaces. With the use of advanced, ultrasonic technology, Dimplex has created an electric fireplace more realistic than any other. Rather than LED backgrounds, the Opti-Myst Series produces a fine mist which is then illuminated creating a realistic and beautiful flame. If you're looking for versatile installation options to make your dream fireplace a reality, check out the Opti-Myst PRO 500 or 1000 Built-In Electric Casettes - with the ability to combine units for a size and shape of your choosing, the options are almost endless.