Filtrete 20x24x1, AC Furnace Air Filter, MPR 1900, Healthy Living Ultimate Allergen, 6-Pack (exact dimensions 19.81 x 23.81 x 0.78)

Great filters. I dont use any other brand. Great performance and value.

The higher MPR the better

LOVE THEM

works perfectly ! Already noticing less airborne dust, cleaner smell in the house

Good product cheaper than local store

After 3 years of using MERV 13 filters on box fans for forest fire smoke, this is by far the best filter Ive found. With a fire 3 miles away, and smoke levels in the unhealthy to hazardous range, my TemTop air quality monitor (which I highly recommend) showed the cheaper so called MERV 13 filters were doing very little to reduce the pm2.5 fine particle count in the air. I put one of these 3M Filtrete 20x20x1 filters on, and wow, what a difference. Within an hour the AQI in our house went from 150 to 20, and continued to slowly drop down to 4, which is about what our HEPA filter will do (it has a 3M filter in it too.) The air flow on this filter is also outstanding. It has a lot more pleats, thus more surface area, than other similar filters.

Difícil de poner por qué seda un poco más grande

worked as expected

We live in New Mexico, and being a dry place there tends to be a lot of dust. Before using this filter, within days of dusting there was constant dust in the house. After installing this filter, weeks go by and theres barely any dust in the house. Its unbelievable. The filter does get incredibly dirty after just a couple of months, so replacing it often does help.

Pricey, but works great!