[This review was collected as part of a promotion.] These 3m filters are my go to for furnace filters. They are just the right materials for my furnace to work great. My family all suffers from allergies and I really think these have helped with purifying the air. I also love that they help rod the air of bacteria and viruses. Would definitely recommend for your furnace.

[This review was collected as part of a promotion.] I have used the "entry level" (inexpensive ones) 3M filters in the past and didn't have a problem with them. So I thought I would splurge and get the one that lasts for 3 months instead of the monthly ones that I have used. This did not disappoint, the quality is superior in comparison to the competition that is out there. Plus easier to change every quarter than monthly.

[This review was collected as part of a promotion.] the 3M - Filtrete™ Ultra Allergen Bacteria and Virus 1600 MPR 1603-4PK, 20 in x 25 in x 1 in (50.8 cm x 63.5 cm x 2.5 cm) fit perfectly into my system and It is of high quality in terms of sturdiness. It will filter out levels of allergens and bacteria that my old filter wasn't able to handle

[This review was collected as part of a promotion.] We were admittedly overdue to change our filter and noticed an almost IMMEDIATE difference in the air. I had been waking up with headaches recently, which have since stopped, and I attribute to allergens that had been coming through the vents from our old filters. We are extremely happy with these filters so far!

[This review was collected as part of a promotion.] These filters seem to be working great. Especially since this is the time when people are getting sick. It fantastic that it helps block bacteria & viruses. These are very sturdy and very well made.

[This review was collected as part of a promotion.] This is an excellent filter. There are less expensive filters out there but you get what you pay for. I stopped buying cheap filters years ago. They just don't as good of a job. These are high quality and very effective. Filtrete is a name with an excellent reputation and I would trust most any product with their name on it. I would recommend these to anyone looking for a highly effective filter allergens.

[This review was collected as part of a promotion.] I really like the Filtrete™ Ultra Allergen Bacteria and Virus air filter. It makes me happy knowing that I am providing my family an additional layer of protection from Allergens, illness, and all-around yucky air. It was easy to install and the material is very thick and durable.

[This review was collected as part of a promotion.] I received a 3M - Filtrete™ Ultra Allergen Bacteria and Virus 1600 MPR 1600 16 in x 20 in x 1 in.n It is the perfect fit, nice and tight. It is a very sturdy filter, and looks so different than the filters I have been using in the past.

[This review was collected as part of a promotion.] The Filtrete™ Ultra Allergen 2X Bacteria and Virus Filter (1600 MPR), 16 in x 25 in x 1 in are great! These high-performance filters helped to improve my home’s air quality. They are durable and definitely help with allergens!

[This review was collected as part of a promotion.] I received the 3M Filter Ultra Allergen Bacteria and Virus 1600 MPR 1601 4 ok 16 in. × 25in × 1in (49.6 cm × 63.5 cm × 2.5 cm ) filter for my furnace and they are wonderful I love that they are Ultra Alergan that so important because my family has allergies for so many things and these are helping so much.