Allowing your fireplace doors to remain open will promote better airflow.
Gas fireplace doors open or closed for heat.
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.
Designed as a surface mount these track free doors sit outside the fireplace opening against a flat surface and help reduce.
Open no glass doors like isokern or firerock with add on gas burning unit fake ceramic logs.
It is still an open hearth fireplace which is susceptible to aerodynamics.
If your fireplace doors are shut oxygen cannot reach the flames.
99 of the time your fireplace doors should be open when you are burning a fire.
In the off chance you have.
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.
If you close the doors the flames pull towards the glass where it can impinge and shatter the glass.
This results in a dull blaze with little heat output.