Review on FilterTime Allergen Replacement Replaces Original Replacement Parts ... Filters by Ron Chang

I had no idea what was in my cabin until I used this filter material. I am genuinely appalled at the amount of dirt and dust that shows up on this filter. That too is quick. If one side gets dirty, I swap them out so the other side is used. I don't mean that I flip them, but you can see in my drawing how one side of the filter is used in my device and the other side is left clean, so I flip the filter to use the clean side. They have a sticky substance inside them that likely helps them catch almost anything that passes through them. Because of this, they cannot be washed and reused. I love these filters. I've used this company's pre-cut filters, but it's a lot more economical as I can get 4 filters for the price of 2 (shhh...don't tell them!). They are very easy to cut to fit the opening in my air conditioner. I will stick with these filters in the future (no pun intended). I could probably buy something cheaper and washable, but I don't think it could capture everything this one does without the dope. Great filter!