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 two of the Pure Guardian AC4825 Purifiers and change the carbon filters in them about once every 3 months. This 4 pack is perfect and fits without any problems or cutting. The price is also a lot better than buying the Pure Guardian ones.

I hadnt bought these because I hate how much money it takes to keep up with the HEPA filter in my filter-fan, but I indulged because my allergies have been so bad and I have a dog, plus I hoped these would lengthen the lifespan of my filter. They do! And actually, there are five of these in one box and theyre washable so you can make them last longer! Plus, carbon filtering is so good for you. Worth it.

I bought this to go with the filter that it lists in the title but I had to cut it to fit the filter. Not completely compatible

They’re ok, not original the ones that came with my air purifier are not as thick, they are softer, these work but seem to make my purifier noisier.

Worked exactly like it was ment to, easily installs

Works great in the air filtration unit but cannot be blown clean or washed. Must be replaced. So in the long run may be a little pricey

Perfect replacement!

Works fine but needs to be changed frequently. Like once a month maybe. Otherwise its gets blocked and the noise level increases

This is the best value for the pre-filters Ive found.

Exactly what they advertised.