Rushmore fireplace inserts feature the TruFlame system ? a combination of technology and aesthetics to create realistic flames and a glowing ember bed, mimicking a natural wood fire. Available in two sizes, 30 and 35, these inserts turn your wood-burning fireplace into an attractive and efficient focal point. The multifunction remote operates as a conventional thermostat, a Smart Thermostat ? which modulates flame height as the room reaches the desired temperature, or as a manual control. The remote also operates the included accent light and blower.