A corner fireplace door is somewhat smaller than an ordinary fireplace door. They usually come in the traditional accordion-type frame because of the limited space offered by the walls. In choosing a fireplace door from the rack, the purchaser has to ensure that the door is big enough to cover the widest area of the fireplace opening without covering the whole mantle design. The door should overlap the whole fireplace opening in order to serve its purpose, but should not keep the fireplace itself from being seen and admired.
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.