They are definitely NOT room darkening at all.   I purchased 16 panels and several of them have sewn folds that are in the area of the grommets.  One panel has a white strip where there is no color.  Several others have crazy sewn seams on the edges.  Definitely not what I was expecting since I have otherwise heard good things about way fair.  In addition they were not in stock as I was told when I ordered and they arrived later than I would have liked.