Do you know how electric fireplace work?The flame imitation created by electric fireplaces is through projecting LED lights onto a screen in a randomized pattern.Each of models have different flame effect because some of them have only one line of LED lights at the bottom while others have more LED strips which can add flame color options,depth and realism.What’s more,there are some model with more than flame light,they also have top light and ember light,creating more vivid flame effect.More details are provided on the website:www.fireplaceempire.com