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

The filter contains lots of black particles about the size of coffee grounds. They tend to fall out if the filter is shaken. It doesnt seem as if the density of carbon particles is really sufficient to matter much.Theres lots of white space were air can pass through without contacting any carbon whatsoever. Plus, the path length that air has to travel through the filter is so short, that it doesnt give much opportunity for any odor causing compounds to bind to the carbon. In practice,I havent noticed much of a change in odor reduction with these compared to standard Filtrete filters even with the HVAC fan set to run continuously. But Ill probably keep buying them just in case they do.

Pooo

Great

Works great

Gets rid of cooking odors, pet odors, I love these.

Saw no improvement in air quality. Gimmick.

Damaged. Paying good money for a damaged item is frustrating and not great for the customer.

Filters seen too work pretty well, have 2 cats and things can get a little hairy but these filters have helped drastically cut down dust and hair buildup, and even though we all know the litterbox can stink these help keep the house smelling neutral also. I generally change the filter once every 2 months or so and it works out very well for the price. I kind of wanted the more expensive ones to try but you also have to remember that the more protection it offers, the less air will be flowing through usually, these offer good airflow though. Definitely worthwhile over the cheaper filters, after all since we are mid-covid and spending a lot of time at home it is good to breathe good quality air.

Taped it to the back of a $25 fan and now I have a HEPA filter for super cheap. The first time I spray painted near it it loaded up quick so worked great.

I honestly do not smell a difference.