2 Pack FLT4825 HEPA Filter B Replacement with Activated Carbon Pre-Filters Compatible with Guardian Air Purifier AC4825 AC4300 AC4800 AC4900 AC4850

Great product and good price. Very satisfied.

Works well, fits okay if you use a wooden stick under to press the button to keep the fan operating. (It has to have a great fit for it to know it has a filter.)

These fit perfectly in the air machine. It's great that it's so easy to change the filters!

Why did you pick this product vs others?:The exterior that holds the frame together is made of cardboard rather than the sturdy plastic that the genuine filters are encased in. The cardboard isn’t aligned straight so the two cross beam supports don’t lay flush therefore causing them to be too large to put in the filter opening unless you are willing to chance shoving it to fit & then forcibly put the cover back on.The other issue I had was the washable filter liners are much thicker and longer than the genuine filters making them useless unless you cut them yourself to fit into the compartment where the filter is.I wouldn’t recommend this product bc they don’t fit the model number(s) that they clearly state they fit.PLEASE TAKE NOTE TO THIS UPDATE ********I would like to make it a point that as ofJULY 2025 I was contacted by the seller and have been given a complete refund (unsolicited) I find it incredibly important to stress that the customer satisfaction is w/out a doubt the company’s #1 priority.I do believe one of the two cardboard “internal” structures that the charcoal filter attaches to was defective due to the placement of a cross support not being glued evenly during production which caused a slight bulge that caused the charcoal filter to bulge out rather than lay flat in order to close the back on my germ guardian w/out causing extra tight friction.I will openly admit that I had not opened the second “internal” filter nor any of the other packages of the charcoal filters so I had no way of realizing that I simply had a defective product rather than assuming the entire product line wouldn’t fit.I hope people will take an extra minute to read this UPDATE bc I don’t want to discourage any possible future purchaser’s from buying this comparable product for less money based on a rush to judgment on my behalf.Had the company not reached out to me after I left my review I never would’ve taken the time to look @ everything that came in the box when I purchased it.I can promise you two things, #1 is that you absolutely CAN cut the charcoal filter to size if it’s slightly too big for your air purifier & it causes no problems whatsoever BUT more importantly, you have a really committed customer service team willing to make sure the customer is satisfied with their purchase.I cannot promise you’ll be 100% happy but I feel safe that the company will do what it takes to work w/you on any issues you may come across.

Perfect and seem to do a job of filtering, and at the right price.

Fits & works well.

Filter works great and a good price to boot

Works great!