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

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

Work amazingly well and killing odors - even cat box odors. Once you the the filters - keep in mind you can cut them to fit other brands and sizes of air filters. I easily placed one in a brand of air cleaner that is no longer made - works great!

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.

it came with the fold.

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.

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.

Bad thing is to small for my machine, maybe was bad measured in the supply.

These work great! Its nice having the extra so I can just rinse off the dust and put it aside to dry and grab a dry, clean filter to use. Ive rinsed mine several times and they still work well. Yes, they are slightly larger but I havent altered them and they work just fine.

Sent the product back on 9/25 and still awaiting a refund. Nothing wrong with it, simply ordered the wrong filter thinking it was the complete filter system. This is the longest Ive ever had to wait for a credit for anything on Amazon. Oy vay...

I am beyond pleased with this product. I have had asthma since 18, now 31, & over the past 2 years Ive needed to use my rescue inhaler anywhere from 2-6 puffs per day! THE FIRST NIGHT I TURNED IT ON, IT WORKED. I didnt use my inhaler after work, before bed, or after I woke up in the morning! Its quiet, compact, and light - which makes it easy to move from my living room to bedroom. I would absolutely recommend this air purifier to anyone.