Good product. However, continues to get more expensive with each purchase.

They seem to do a very good job

Definitely worth the price.

Replacement air filters for the same type of filter I had bought before. Great product.

The 4 pack is a great deal, and to get it on sale even better!

These are great for breathing cleaner air..

I have terrible allergies and these filters truly help

A lot cheaper and same good quality

These are quality filters at a value price.

Being able to buy in bulk lets me take care of my furnace without as much money.