I have used these filters for years now. The price is a little high but it works out since the filters work well for three months.

Agree with these reviews, excellent product for those with asthma. I have 2 dogs, and these filters do the job in controlling the hair and dander.

[This review was collected as part of a promotion.] Keeps the air Clean in the house with a MERV 12 rating. I would recommend the 1550!

I bought these a year ago buy the unit (6). I love the way they work taking everything bad out of my air in the house.

i have used this product for 7 years. there is no comparison to this filter. i have saved money from technicians who would like to clean the unit.

I bought several 4" filters for my central Heating & air system. I have been very impressed with the performance of these filters.

We've been using this air filter for over three years! It's an excellent product. I would not hesitate to recommend it to anyone.

This is the only air filter we purchase for our current home. Our old home required the thinner filters, but all are always Filtrete.

Just had new A/C - Heat system installed in my house and the technician recommended this filter to be used with new system and giving it a try.

I just bought this today and I'm already breathing better. I have allergies bad and have pets this products is amazing