Breathe Naturally 16x48 Cut-to-Fit Activated Carbon Filter Sheet (1 Pack) Multi-Use Charcoal Air Filter Pad for Air Purifiers, Air Conditioners, Air Vents

I use this all over my house, I have a variety of air filters, some store bought, some home made. I use these in all of them as a layer of my filter stack. works great to eliminate certain smells, mostly cooking and smoking smells. when they get full I rinse them, after a few times of this they are pretty thin and useless. This is a consumable item. they dont last forever, but they do good work while they last.

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!

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!

Thinner than expected only about 1/4”

I really like that they filter the air from the heat vents, and we can breathe better. I also like that we are not limited to a particular size and we can cut them to whatever size we need.