Optimyst pro box built-in water vapor firebox

Bring a truly lifelike fireplace experience to your home with the Dimplex Optimyst Pro Built-In Electric Firebox series, available in two sizes to suit different spaces. With patented ultrasonic flame-and-smoke technology, it transforms plain water into a rising mist illuminated by LED lights — producing realistic three-dimensional flames and drifting smoke that mimic a real wood fire. The unit installs flush in a wall for a clean, architectural look, and can be configured as a single-sided or see-through fireplace to connect two rooms seamlessly. A discreet fan-forced heater provides supplemental warmth, while the flame-only mode lets you enjoy ambience year-round without heat. With no venting, no fuel, and virtually no maintenance, the Optimyst Pro firebox combines stunning visual realism, flexible installation options, and practical comfort — perfect for modern interiors, feature walls, or elegant custom fireplace builds.