Breathe Naturally Universal Cut To Fit Carbon Activated Air Filter - Replacement Charcoal Filters - Pre Filter Carbon Sheet for Air Purifier, Vent Filters & More - Packed in USA (Pack of 4, 16x48)

Designed to scour air of odors. It is very effective as first and second stages of three stage system. Fits around barrel HEPA filter with included micro-hook fastener strips, without any trimming.

Easy to cut and install in my minisplits. Saves a ton on $

The product is ok, I guess. I haven't really used it. I just received it after waiting 38 days.The company proudly boasts that this product is made in the USA. Company is in Minnesota.I went directly to the company website and started a chat communication asking about the month and a half shipping time estimate, and never received a response. I used the chat feature during normal business hours. It appears no one's home. No one making product, shipping product, or responding to consumers.

Definitely reduces food smells that used to circulate on our AC system!

I have an LG high efficiency window A/C. It has a washable filter over the evaporator coils and an electronic reminder to tell us when the filter should be cleaned. All well and good, EXCEPT that the filter is thin and cheaply made. It doesn't prevent a fairly rapid buildup of gunk on the internal evaporator coil, the fan, and the internal ductwork. Once all those components have a layer of dust and gunk all over them, the heat exchange suffers from the insular properties of the crud on the coils and the airflow is further reduced by the build-up on the fan. In short, the efficiency I paid extra for is lost until the unit is uninstalled, deep cleaned and put back in the window. What a pain!Breathe Naturally cut-to-fit filter material and some adhesive Velcro strips solved the problem almost completely. I put the Velcro "hook" half of the adhesive Velcro kit around the perimeter of the evaporator coil intake and some more around the two side and one bottom air intake vents molded into the case. (Search Amazon for adhesive velcro and you'll find what you need.) Then I installed Breathe Naturally filter material over all of these places - using the velcro to hold the Breathe Naturally material in place and make a good seal around the edges. The 1st set of Breathe Naturally filters over the intake vents pre-filter the air. The 2nd filter over the condenser coil inside the hinged front cover provide a secondary filtration stage. Lastly, the A/C's flimsy little factory filter - sitting between the cut-to-fit filter and the condenser - gets a third chance to stop particulates. In addition, the carbon in the Breathe Naturally filter material also does a great job of keeping the air coming out of the A/C smelling fresh and clean.I replace the Breathe Naturally materials about once every three months - and vacuum the surface dust off of them each time the "clean the built in filter" reminder light comes on. I also wash the factory filter at that time. I really love the performance and lack of odor and have yet to notice any visible buildup of crud on the A/C internals. Now I always have the high efficiency performance I paid extra for!All you need for this project is a measuring tape or ruler and a pair of scissors. A very easy and very effective DIY enhancement!

I am so happy to receive this product. I have used these before, but mine are quite old. Even though they say they last only a certain amount, they do last longer. I use them most on the floor on my floor in the summer, as my house is built on a cement slab. Her is Wisconsin, there can be moisture, it keeps my house smelling clean. I am using the new pouch for the seat of my car, after taking someone who isn't real clean

This is my second order of 4 filters. They arrived in 4 separate bags which is better than 4 in one bag in the first order. However, the disappointment is these filters are noticeably thinner than the first batch. I will be using them because I need them now, but I will be going back to my previous supplier in the future.

This filter works good in my portable a.c.

I bought the 24" x 24". They are about 2 mm thick (0.07" thick - not 0.2" as advertised). Not at all sufficient for what is needed. Flimsy. Super disappointed.

Great price, plenty of sizeable options that I can cut with ease. 12x48 gives me double the filter size I need for a great price. Can’t wait to breathe better.

Easy to cut and install. The carbon helps to reduce odors which was helpfull since both air conditioner units have not run since 2009. Have enough left over to put behind the furnace intake and be able to do this again when it's time.

I liked the option to cut to the size I needed. I pulled out the filter unit from my microwave, opened the frame and added the new charcoal filter, then closed the frame again. Popped it back in the microwave and back in business in 10 mins. Better on the environment to replace just the filter instead of the entire tin frame and grate. It also costs half the price of a new framed filter!

We have a neighbour below us who has cats. The smell of cat litter comes up through a vent that lets out onto the landing of our stairs to the second floor. It's relatively subtle, but definitely there. I cut out a piece of this filter and fit it behind the grill of the vent. We now never notice the cat litter smell!