Filtrete 20x22x1 HVAC Furnace Air Filter, MPR 300 MERV 5, Basic Dust and Lint, 4 Pack

3M is a trusted brand, their products always deliver the expected quality, but are sometimes expensive. Purchasing these via Walmart's online store the price is very competitive.

An exact fit, good quality at a good price

Very, please extremely good fit very satisfied

These filters work great to extend the life of my air conditioning system as well as helping to rid out pollens and other and things related to allergies.

This is a low cost Merv 5 (out of 16) filter, I change it about every five weeks during our Colorado heating season. My theory for filter maintenance is to use low cost filters and change theme often. The furnace runs fine (moves plenty of air) with this filter and a 5 week change cycle seems to work well.

My home uses return air filters 20x20 and 24x24. I've been buying 20x20 MPR 300 and 24x24 MPR300. After my last purchase of 24x24 pack I too thought the 'air direction arrow' was backwards by mistake; I called in and was advised that the arrow was indeed correct. I take issue with that, especially on the 24x24 with all the cardboard 'crisscrossing' in addition to the new 'plastic wire' net all on the intake side. That's a lot blockage of air flow. You shouldn't need the cardboard strips and crisscrossiing with the polypropylene net The 20x20 had much less reinforcement so the airflow is much better but the cardboard filter frame comes apart.

Been buying these for yrs. Works well. Only thing is, often around $5 bucks a piece, other times a pretty high increase ?

We were recommended by our HVAC guy to use a lower MERV count which led us to purchasing these filters. We've been using this style for a little over a year at this point. They seem to only last 1-2 weeks before they start whistling and we usually give in around week 3 and replace them because they are so loud. I just don't think the structure of this particular filter is strong enough.

The carcboard frame and the material used to enforce the filter are subpar. After several weeks, especially as furnace is used more due to colder weather, they collapse inward and become useless. Doj't waste your money.

My unit was roaring and I checked filter, which I had replaced not too long ago. It was very hard to remove and was sucked up against fan. It was installed according to arrow, but the support was on the bottom side, not top to protect from fan. I changed filter and reversed direction. Will replace with another brand and style that fits and supports filter correctly.