Love the size and that it is not rounded; it is literally 3.5 inches deep; so looks cool to place a floating shelf above. Now I do not use this for heat output; it is for my meditation spot... but the light itself for the unit does make the unit rather warm.  Flame looks nothing like photo. This is the only reason why I am giving 4-stars as it's a five star unit; but for some people I could see them having an issue with the misleading representation of the 'flame technology.' So be aware; also, the rocks from light up from under... So has a nice cast. Unit is not quiet either. Also, you can swap materials inside for whatever you want; like if you have driftwood or something else you'd rather use.. just it is a very small ledge for placement. But all in all; exactly what I wanted.