Filtrete 20x25x1 Air Filter MPR 1000 MERV 11, Allergen Defense, 2-Pack (exact dimensions 19.688x24.688x0.84)

This is one of these products where it is pretty difficult to judge how good it is. I have no way of measuring the cleanliness of the air in my house, or the count of dust particles or what ever, so how can you really know? Having said that, the filter fit better over the air inlet opening; it actually keeps itself in place, whereas the old one I had to secure with some folded paper towel. This one is about .5 to .75 inch larger, in ACTUAL measurement, so I suggest measuring the opening and not going by the size you previously had. It also means that there are no longer small gaps around the perimeter of the filter. You would hope that prevents some dust being sucked in when the AC or heat kicks in. Sounds quieter too. As always, choice is a matter of compromise: the higher the MERV rating, the harder your AC or heat will have to work to suck the air through the filter. Apart from the strain this puts on your system, it seems to me this must also run up your electricity bill more than might be necessary. So I did my research online, and decided that this filter was the best compromise for my situation. And it seems to work fine (although it always amazes me how quickly the inside of a house gets dusty when you look closely) and it is quieter, so a good choice for me.

Good value. Excellent product, repeat purchase.

Did a good job in my older furnace.

Both filters showed up bent and unusable.

I have a new build home and four pets, so I need a really good filter. This is the best filter Ive tried in the first year.

These are garbage. So flimsy the first shipment was bent by other items in the box. The second batch arrived undamaged but one of them got crushed in storage. I will not be buying these again.

After receiving the filters in the mail, I was pleased to see the shipping was fast, well packaged (it came in a huge box which I am sure to find other purposes for), and accurate. The filters slipped right into the intakes on my first and second floors (as advertised). While I do not suffer from allergies, I have noticed that my toddler son hasnt been draining from his nose as much. Hes been struggling with congestion since the early spring and these seem to help while hes indoors. So far, I am well pleased with the filters. And Ill probably order again.

very nice hard size to find around here.

Since I have started using this filter I have had less allergy symptoms and a bonus of less dust on all the furniture

Not very good I tried it to save money. Does not work well with spending more and getting better grade of filter