Review on Enhanced HVAC Filtration with FilterBuy 20X25X1 Pleated Furnace Filters by John Hall

My fourth (?) order . Trust me, when I change them, the old one turns almost black! Collect all trash from the air. I'm allergic so I like the higher Merve rating. However, they say they are good for 3 months but they are not. Even after 2 they are black. We don't smoke, we don't light candles, we rarely cook, so I have no idea why. Aside from the lack of durability which I've seen the whole time I've bought them, this last order was in poor condition. The Amazon box was in perfect condition but the filters were pinched in places and bent in places. Now I have a box of 4 so I may look into another brand before the next 8 months.