Heatiator BH42A is a fireplace system designed for residential use and has been tested and listed by Underwriters Laboratories Inc. It can be used with optional components such as glass doors, an outside combustion air system, and heat circulating fans, which can be purchased separately and installed later. The fireplace has a screened face to prevent contact with insulation and a black non-screened fireplace front that should not be covered with finish materials to allow proper airflow.