Four pack of 12 x 12 air filters cost $20 ea at Home Improvement stores. So four pack for $39.99 is a deal.

Good product at a good price -- actually more convenient than the on-line filter service I used before.

I have used this type filter for years and they have done very well in keeping my furnace and air conditioning free of dust.

Every. Last. Particle. They fit well and seem to have quality construction. Nothing to complain about!

Excellent filters, I have 2 dogs and bad allergies, these filters make all the difference in how well I breath.

This is such a great deal buying them in a 4-pack like this. They work better than the cheaper ones I was buying before.

Filtrete filters are generally well rated by Consumer Reports. Have not used this one previously though.

Online ordering and delivery of the air filters in bulk is convenient for having them on hand when it’s time to change them often.

I was sneezing all the time from cheap filters. I switched to these and everything cleared up within hours.

It was exactly what I wanted. That said it was just a few millimeters too big and I had to shove it in place, but it made for a good seal.