Carbon Activated Pre-Filter 4-pack for use with the Germ Guardian FLT4825 HEPA Filter, AC4800 Series, Filter B By Complete Filtration Services

Changing this pre-filter on a regular basis will extend the life of the hepa filter. Also, keeps the air cleaner. Well worth the modest cost.

Was able to cut to fit to replace filters from my old air purifier that became unavailable. Works good.

Easy to install and came on time. You get exactly what you pay for and it’s good quality. This is the second time I have bought this product and will be buying again in the future. Would definitely recommend.

I like that it seems to catch so much. I didnt realize I was breathing all that stuff Even my furniture stays cleaner from dust an pet hair

Product is good and performs well but gets folded up and sent in a bag, leaving the filters crumpled and creased and difficult to make them stay in place and fitwell on the larger filter. I set mine underneath a book for several weeks to get it to flatten out. There really should be another velcro spot halfway down the filter to hold it more securely. Otherwise the product works quite well.

I developed a late in life allergy to my cats. So I bought two air purifiers that have filters. As we know, filters are ridiculously expensive. The air filters I bought came with these carbon covers so I immediately ordered this box of 4. I would say I change them every 6-8 weeks (at minimum) and so far I have been able to keep the filter clean enough that I have not had to change it yet!

I have used these filters for years. They came with my air purifier and work so well, I see no reason to change.

The filters were folded into half. There is no way to smooth the folded winkles.

These were supposed to come with the other part of the filter for the air purifier!! I even asked if thats all i needed and I was told yes!!! The box part that the black filter is supposed to go on you never said i needed that as well!!! Now I have these black filters but the box part is missing!!! Thats not right at all!!!

The description is somewhat misleading as this is not a four pack but one large sheet which can be cut into numerous filters. It looks like you can get 10 filters out of this one sheet but you have to cut it with scissors to match. I took the old filter out, lined it up on the sheet, cut it and then placed it on the Velcro that exists on the inside filter. It’s easy to do but first I was confused so I wanted to write this review. The description is somewhat misleading as this is not a four pack but one large sheet which can be cut into numerous filters. It looks like you can get 10 filters out of this one sheet but you have to cut it with scissors to match. I took the old filter out, lined it up on the sheet, cut it and then placed it on the Velcro that exists on the inside filter. It’s easy to do but first I was confused so I wanted to write this review. This ends up being a great buy since you get 10 filters, not four, and prolong the life of your hepa filter inside.