[This review was collected as part of a promotion.] This is just a furnace filter. But it's really good quality and fit perfectly into my furnace cabinet. I'm not sure how I'll be able to know it works well other than waiting for a month or two to pass and understand if it works. I would think if it shows up dirty then it works!

[This review was collected as part of a promotion.] This filter is easy to install. The construction is solid and not flimsy. You just slide it right in. Fits perfectly with my HVAC system. My whole family have allergies year round living in the south, so we need something that works, efficient, and easy to install. This meets all my criteria. This filter is supposed to capture 2x the bacteria and virus, so with all that going around, this is important to me. I feel my whole house breathes a bit better. I also like the fact it also catches cough debris and lint! Lint is something we definitely have a lot of in our house. So good so far. I will continue to use this product.

[This review was collected as part of a promotion.] I got these filters because: -dogs -kids with mild allergies -changing filters regularly helps your heating/cooling system work more efficiently - I trust 3M Filtrete products -cold season is upon us and these filters have amazing bacterial and viral filtering capabilities. easy to install these are sturdy and fit my furnace perfectly. i noticed. reduction in air flow noise immediately as well as less dust on the furniture. Because my kids have inhalation allergies it is critical that we keep our home air as clean and filtered as possible and these do the job efficiently and effectively.

[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.] Filtrete filters have always worked wonderfully for my air conditioner. They are very well made, easy to install, and seem to pull monstrous amounts of dirt from the air. Filtrete air conditioning filters have always fit perfectly and always stay in place. I love the fact that it pulls all the very small particles in the air to make my home a much healthier environment for my family.

[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.] So far I have only used this for a short period of time but it seems to be working. I have checked to see if there was debris in the filter and there is. As far as air quality, I can’t say I have noticed a difference. Overall the filter seems very well made and durable. Hoping it holds up for the 3 months.

[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.] I can’t say enough good about this filter. Since using it I’ve noticed a difference in my allergies and quality of air. I feel like I can breathe better and don’t wake up congested as I usually do. I know it’s working for my air purifiers that I keep running throughout my house show that my air quality has improved. These are definitely my new go to filter going forward. I definitely recommend!

[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.