They work fine and are a A lot less expensive than the hardware store.

Very good filters at a great price!

Great filters at a great price, can't beat the deal!

The best filters at the lowest price! What's no to love! And delivered to my door free (with +)

This air filter on the market, traps almost all the dust particles

Used these for years with great success

Love it, don't have to worry about it for 4 months

Works great Change every month

Great item to help with allergies at a great price.

Fits PERFECTLY and helps with cooling and heating system.