This electric fireplace insert features 3-level flame brightness with high, medium, and low settings, plus realistic 3D flames for visual enjoyment. The 1400W fireplace heater has a high power output of 5,000 BTU and can warm up a 400 square foot room, with an integrated timer from 0 to 6 hours. It has gained certification from CSA, and the plug has gotten laboratory accreditation from UL. A built-in thermostat keeps the temperature at a set point from 62 Fahrenheit to 82 Fahrenheit, and the overheat protection system automatically turns off the power when the temperature is too high. The flame, heat, and timer can be controlled by touch buttons or a handy remote control with a maximum available distance of 26 ft, and the LED indicator displays the temperature degree. Material: Steel.