99 of the time your fireplace doors should be open when you are burning a fire.
Gas fireplace doors open or closed for heat.
Allowing your fireplace doors to remain open will promote better airflow.
If you close the doors the flames pull towards the glass where it can impinge and shatter the glass.
Open no glass doors like isokern or firerock with add on gas burning unit fake ceramic logs.
Ceramic glass doors a masonry fireplace and do not care about any heat coming into your room then it is ok to burn a fire with your glass doors closed.
Oxygen is a key element in healthy burning fires.
In the off chance you have.
Compatible with a traditional masonry fireplace the decorative compatible with a traditional masonry fireplace the decorative and bi fold pleasant hearth ascot collection glass fireplace doors have a 1 piece welded frame and a high heat powder coated black finish.
If your fireplace doors are shut oxygen cannot reach the flames.
Designed as a surface mount these track free doors sit outside the fireplace opening against a flat surface and help reduce.
It is still an open hearth fireplace which is susceptible to aerodynamics.