Germ Guardian FLT4825 HEPA GENUINE Air Purifier Replacement Filter B for GermGuardian AC4300BPTCA, AC4900CA, AC4825, AC4825DLX, AC4850PT, CDAP4500BCA, CDAP4500WCA and More, 1-Pack, Gray

Have used this in my mother in laws assisted living apt. She swears by it. Before she always felt she had allergies and it was dusty. Since we bought her this we have kept her in new filters whenever it tells us.

I liked that this one is the real product that actually fit into my air purifier. The price fluctuates every so often. It works as it is supposed to.

Some last a bit more than six months and others just four. It depends on the allergens in your air.

This fit great, and I will be buying more. It was the cheapest I could find that I knew would fit based off of other reviews.

So easy to install. What a difference have purified air is.

It is a good replacement and works as expected

Great price and easy to order.

Works well to eliminate odor

It takes out a lot of the dusty air we have in Yuma. Maybe not all of it but sure enough there is plenty in the filter. Thinking about having one in the bedroom too. Not real quite but its doing its job so..

This is the third filter Ive used for my air purifier and They usually last a long time. I usually go 7-8 months before the purifier tells me it needs to be changed. The replacement times might be different for each house since dust levels might be different. I live in a very old dust prone house. They do a great job and every so often I vacuum off the dust thats accumulated on the back of the filter just to help make it last longer.