Product review (1 stars): Terrible
I barely get a month from this filter. I've been more ill since I started using it.  The Vicks single room type from CVS work way better and don't have all the extra costs. In NC, Charlotte area,  i never even open a window.  This is a major disappointment. Wouldn't buy this again. Costing extra $20-30 a month in filters and protecs.