The embers appear fine from a distance but when standing close to the fireplace and looking down there is white light showing where there should be red embers so we are wondering whether there is a cover or piece of fireplace missing. We will check with a local dealer to see if this is how it is supposed to be or a flaw. If it is how it should be, this is not good enough for an otherwise great fireplace. And if this is a flaw, this is not good either. How annoying given this is probably the best insert of this kind available.