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

I have owned three of these air purifiers for a number of years. Very easy to use quiet and do a great job. I have ordered this one for a friend who has severe asthma.

These filters are thicker and much better quality than the one that came with the air purifier. Very happy with purchase!

Product arrived day before expected delivery. These prefilters are for my Germ Guardian Air filter. They are a tiny bit bigger and a little thicker but fit fine. Very happy with them.

I guess I did not read well enough but you get 4 filters and each one lasts about 2 months. This is a great value and a great product. You can vacuum the filters once a month to make them last longer, just use a hand vacuum with a hose. These are packaged bent so they have a bit of a memory so lie them flat on arrival.

Does the job its designed for.

These came in a plastic bag with holes punched in it. Carbon filters degrade when exposed to air. All the other brands I have purchased come sealed in plastic for storage until opened. I dont think Ill purchase this brand again, because there is no indicator that the filters are fresh when they arrive.

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!

These were cheaper than the other filters offered by other sellers. I cannot say how well they work in terms of the activated carbon absorbing anything but it helps to be able to replace the outer filters when they become dusty. I put them in a 1 gallon zip top bag once I got them to keep them fresh (prevent the carbon from absorbing as much as it would otherwise). On the downside, although the width was correct, the filters are not tall enough so I have to cut one of the others to fill the rest of the filter area.

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

Was able to cut these up to fit in my Holmes hepa old air purifier. I cut these a little larger than the size the Holmes came with so they fit snugly and their are no leaks. The old Holmes is like new.