One word superlative this and 3M filters are manufactured for exceptional quality and performance.

I have been buying this product for years-love it.

I have used this filter for years now and have had good results each time.

Works well to make the air for my furnace much healthier

I have used these filters for years and would not buy any other kind.

when i have this one i can breathe better and my house isnt as dusty

These filters really do a great job. Worth the money.

Filter is much better than the old thin filters. Works for six months very efficiently.

Love this filter. It really does help with allergies and I wouldn't use another kind.

I have been very happy with my purchase of the allergen filters.