Filtrete 20x20x1, AC Furnace Air Filter, MPR 1200, Allergen Defense Odor Reduction, 2-Pack (exact dimensions 19.69 x 19.69 x 0.81)

Made a DIY air purifier

I have a home office and during most days my dogs keep me company while I work Especially in the winter when the house is closed up, it can get a little eau du dog in there. Ive tried Febreeze and air fresheners and just about everything, but nothing really took the odor out of the room until I tried these filters. In a matter of hours the smell of dog funk was absorbed right out of the air. Now I leave the fan on re-circ all the time and the air in the office has never smelled fresher!

Does exactly what its supposed to do.

Seems like they could be good. But they ship with no protective support, so both filters were crushed and bent out of shape when I got them. Because they are misshapen, they don’t fit well in the intake vent.

Lots of carbon particles upon opening (it will likely require vacuuming upon 3 month removal). Does not help significantly reduce odor in our central heating furnace - We can still smell basement cooking odors on the upper floor.

Its a filter.. Cant really NOT work

I didnt know my house could smell this fresh!

I can definitely tell how crisp the air has become since replacing these flimsy strings the landlord gives us to this filter. We have pets, which was my main complaint. Doggy odor is gross and need to rid of it. The house has already improved in the few short days of using this product. I will continue to use these to see if our allergies alleviate.

These work well in our HVAC system, allowing a decent flow to filter ratio. Very pleased.

The thickness of this filter caused my A/C unit to freeze up on the longest day of the year. Do yourself a favor and buy cheaper filters, just replace them more often.