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

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

This air filter is a quality item and works as specified.

I just changed my pre-filter after 3-4 months of use. I changed it based on time rather than a change in machine operation. It was extremely dirty; it looks like it did its job well. It protected the more expensive HEPA filter. Will buy more when needed.

So, let me start with a little background. I have 2 dogs and 2 cats at home. The dogs track in a lot of dust from being outside and we have 2 litter boxes constantly in use. So my air purifier is constantly working. Anyway, i ordered this 4-pack to replace the single black filter that came in the original. These ones were definitely thicker and the size was *almost* the same. These were about a centimeter too long. However, i used regular scissors and then they were perfect. They seem to be working just like the original. It still sucks in the odors, fur, and dust like the original. It already has a tan color on it because of all the dust and its only been a few days. (yuck!) Overall, this is a great deal and just needs a minor and simple modification. I dont think spending 3x more for the other filters would have been worth it. Overall, Id recommend.

These are your basic charcoal filters. You do have to cut them to fit. I used them as a replacement for my air filter instead of the much more expensive ones. I change mine at least every few months. Not sure how long these will last, well see, but they are the same filters I used on my old Hepa filter and they did the job.

I bought this filters to replace my AC4825 filters but I’m truly disappointed. First of all the quality is very low and the red light on my filter keeps blinking instead of resetting to green. On the product description, it says that it should work for this unit but it does not. I’ve had to put black tape on the blinking light. I don’t know if the blinking light will damage the system. If anyone knows how I can fix this problem, please let me know. Thanks.

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.

Great product delivered quickly at a great price.

Can dust and within a day super dusty again. Bought this and have it running it has just about eliminated the dust. Dont have to dust for atleast a couple days now in between rather then every day

Direct replacement, fits perfectly.