Most fireplace glass doors are made of tempered glass with either ceramic or anodized aluminum frames. Glass is placed on the door so that the fire can still be appreciated even with the door closed. Most of these fireplace doors can be bought stock - meaning that most of the door that are for sale can be purchased off the rack and installed with minimal changes.
Like some contemporary fireplaces, the electric fireplace is also portable, meaning it can be move from one place to another. If you are cold in your room, you can transfer the fireplace in your room or in any desired place. It doesn't demand wide-ranging refashioning to be set up and use.