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

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.

Easy to use and match with current filter

I have a multiple cat household--to say the least. Although I have done all those expected things to reduce the odor of litter pans and pets, the air sometimes just needs to be refreshed. Ive accumulated three Germ Guardian air purifiers over time. One or all of them are always on. Two are on timers, the big one near the litter pans runs on lowest setting 24/7. The one in the bedroom is on a timer because I forget to turn it on when I go to bed. Im certain a percentage of it is the white noise, but physically, my eyes often feel sticky to actually a little crusty, and during spring and summer, my throat can be itchy when I wake up. Also, when I switched to an alleged low-dust plant-based litter, the dust was absolutely unbearable. A fine layer of powder settled everywhere in my house. I was miserable and ready to go back to a clay litter. The two filters in the main part of the house go a long way in reducing the dust in the air and on my furniture and floors, the reason why one runs 24/7 near the pans. However, in the years since I bought my first purifier, I have seen the charcoal layer of the filters get thinner--dont know if it changes the performance of the filter. I dont believe the white folded portion of the filters have changed much, but the charcoal layer has thinned considerably. I know this because I found an older filter that fell behind some cabinets in my garage and only recently pulled it out to use it and noticed how much thicker the charcoal layer is. Overall, I still recommend the filters and the purifiers for the longevity and effectiveness. I have all of the sizes on a six month subscription so when the new one comes in I just change them.

Ease of use, installation is simple and fast. Viruses and/or bacteria dont have a chance with this filter. Pet hair, dander and other allergens are significantly reduced if not completely eradicated

Original part works great.

I have used these for six years and I have no complaints

I suffer from bad indoor allergies. Dust and cat fur, to be specific. This filter has helped in keeping my allergies at bay in my bedroom. Plus, you can see all the dust thats accumulated when you change out the filter. Its incredible. Its a good filter, and this replacement fits well.

I tried to use an aftermarket part from a different supplier and they did not work. The case has a tiny limit switch at the bottom that must be depressed for the power to turn on. The aftermarket part had a cardboard case with a foam seal and not enough regidity to depress the switch. I returned those and ordered these original supplier parts. They worked perfectly when installed. These are the only parts I will order in the future. More expensive but they work.

Amazing product!

We love both our Germ Guardian and of course the filters are needed!