Excellent filters at a really good price! These really eliminate the finer dust and pollen particles in the air in our house in SC. We have noticed a drop in accumulated dust on horizontal surfaces in the house since we switched to these very efficient filters about 8 months ago.

We had a difficult time locating the Ultra Allergen 2X Bacteria and Virus Filters in the correct size (18x20) for our furnace, but finally found them online from Sam's Club. We are grateful for the ultra-allergen / 2X bacteria and viral protections provided by the 3M Filtrete Filters. We also appreciate being able to shop online at Sam's Club even though we are not members. Wow!

I have used these filters for several years and don't have to change them out as often as other brands. Although it states they last 3 mos, I usually swtich them around 2 mos in summer. I don't have much along allergys so I can't speak to it's effectiveness or maybe that's why I don't have allergys :-)

These are the best filters we found at any store, including the local hardware stores. We wait for them to go on sale, and usually buy two packs, as we change our filter every month. Thus far, we feel that these filters are helping to keep our furnace cleaner and our air clean. Definitely recommend.

We've used these 1600MPR type filters from Filtrete for several years in our 1400 sq foot, 2-story condo. It does a good job for its intended purpose as near as I can tell. Although I'm not able to see allergen, bacteria and viruses, I do always see a discoloration on the pleats when I change-out the filter at 3-month intervals.

The Filtrete Ultra Allergen Bacteria and Virus filter seems to be helping reduce my allergies, especially when used in combination with room air purifiers. The MERV rating of 12 is higher than I usually prefer since it can restrict airflow, but these filters make it worth having my A/C work harder throughout the day. They offer great value when purchased in a pack of four, and Filtrete is a leading brand in air filters.

When I saw these on sale at Sam's, I immediately went down to stock up. They clean the most miniscule particles of dust, debris, and other particles from you recycled air, and add years of life to you HVAC unit by preventing this particulate from getting caught up in your coils.

They were received in good condition from the shipping company. We use these filter because I have a severe respiratory condition, These filters help keep down microscopic particles that could exacerbate my condition. In my option they are excellent filters.

My friend recommended these filters and I'm very happy using them. The air is a lot cleaner; I don't have to change the filter out for 3 months. I highly recommend, although pricey, it is definitely worth the money. Also, they have a reminder when to change out filters.

Always buy these on sale at Sam’s Club. Good value.