ClassicFlame 39EB500GRS 39" Traditional Built-in Electric Fireplace Insert with Glass Door and Mesh Screen, Dual Voltage Option Dual voltage technology allows this insert to be used for 120V or 240V applications, providing supplemental zone heating for up to 400 or 800 square feet respectively Multifunctional remote and control panel allow you to decide the temperature of your room from 59F - 86F Flame effect can be operated with or without heat, providing the ambiance of a gentle rolling fire all year long Spectrafire flame effect technology offers a realistic gas-burning or a classic, wood-burning fire effect with three brightness settings each Electronic timer function: automatic timed shut off from 30 minutes up to 9 hours