Any help in sorting this out would be much appreciated. I purchased a foreclosed home and renovated the property. The home has a Dovre fireplace, although it looks like a wood stove disguised as a fireplace. I had the fireplace inspected and cleaned but have not used it yet. The fireplace was dirty, but it was cleaned and I was told everything looked okay. The inspection was way earlier in the year, and for kicks, I had a look recently to make sure everything looked okay as I intend have a lot of fires this winter. Towards the top of the firebox there is a rectangular hole, part of it looks like a factory cut but part of it looks rather hastily cut, or worse, like something may have broken off. It appears still be sealed, i.e. not open into the wall cavity. I am wondering if this is a fresh air intake or something to be concerned about. The company I used to clean and inspect the unit doesn't know by looking at the photo, and they are not so readily available to come out to have a look, which is a little concerning. I am curious to know if anybody knows what this is while I seek out another inspector. Thanks in advance!