Breathe Naturally Universal Cut to Fit Carbon Activated Air Filter - Replacement Charcoal Filters - Pre Filter Carbon Sheet for Air Purifier, Vent Filters & More - Made in USA (Pack of 1, 16x48)

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!

Using it for odor control for countertop compost bin. It works Perfectly. When the lid is closed there is no smell at all. Best $ I’ve spent.

I have been using these filters for years. The last three orders the manufacturer has made them thicker ....I love this new version ! Really have noticed better smell and lasting longer. Oh with some scissor work I can make 2 changes as a pre filter for a 24" x 30 air intake..

My daughter does nails and the odor of some products is absolutely toxic. These filters fit under her dust collector filter and today I did not even know she was using product-that's how well these filters removed odors. I will definitely buy them again.

I've been using activated carbon filters for a few years now as a compliment to my AC return air filters. this filter, coupled with the fairly inexpensive filters available from the big box stores combine to make one of the most effective AC filters I've ever used.One really good feature of the activated çarbon filters is that they you can use a shop vac to clean them periodically, which extends the length of time they can be used. Placing one of these filters directly in front of your standard filter also extends the life of your standard filter.I replace the carbon filter (and regular filter) once every three months, which seems to be the ideal timing as it pertains to the carbon filter's effectiveness.

Works as designed

Does an okay job filtering my heating system.

filters are sturdy and great quality. Easy to cut to fit vents.