[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.] 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.] After having the Filtrete Ultra Allergen Bacteria and Virus filter in use I have defiantly noticed a difference in the air quality. it seems to be getting all the nasties and odors out of the air! It is well marked for installing and went it well.

[This review was collected as part of a promotion.] I think these 3M filtrate filters do a good job of filtering out allergens in my home. The filters are extremely well-made and easy to install. The material and shaping of the filters make it look like they would do a great job and filtering out the allergens. I’ve already noticed less dust particles in my home as a result of using these filters. I’ve already noticed less dust particles in my home as a result of using these filters Overall, they appear very well-made and durable, and seem to work well at filtering out particles which can irritate allergies of sensitive people

We started buying the Filtrete 1600 Ultra Allergen because we live in an area that produces lots of pollens, and we have a dog. We can definitely see and feel the difference with using this brand series and other brands. We sneeze less, and there's less dust. Our home has a fresh smell and does not smell dusty like some other places I have been. To make things even better, they are cost efficient. I won't ever change filters as long as these are available.

[This review was collected as part of a promotion.] We love this air filter. It’s made heavy duty. The most important thing is it’s designed for allergens. And that’s important to us because I have to take allergy medicine every day and this is just an extra step in blocking out the allergens. We have four dogs and so there is a lot of pet dander in our home. These air filters are absolutely the best, they are a little more expensive than the cheap ones but they work so much better. Take it from someone that is highly allergic to a lot of things, these work great.

[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.] Recently changed our home filter to this one and have already noticed a difference in my allergies. Normally it is the worst in the morning and late evenings, but since changing to this filter I have been breathing better through the night.

[This review was collected as part of a promotion.] I have tried many cheaper brand filters and you get what you pay for. These Filtrete™ Ultra Allergen Bacteria and Virus are worth every dollar you spend on them. These trap so much more dust than any other filter out there. Stick with the best quality when you care about your air quality.

[This review was collected as part of a promotion.] 3M Filtrete Ultra Allergen Bacteria and Virus air filter makes the air in the house feel and smell cleaner. I feel comforted that the filter removes bacteria and viruses. Built well and easy to install.