Lennox X6672 16x25x5 MERV 16 Carbon Air Filter 2-Pack with Cleaning Cloth - High Efficiency HVAC Furnace Filter for Cleaner Home Air | Ideal for Allergies, Pets, and Dust Reduction

If you have a newer Lennox furnace, this set of filters is a must-have. They are excellent at catching dust and pet hair (I have several indoor cats) and keeping your furnace motor in good condition. In addition, they only need to be changed once a year, saving you both time and money in the long run. This particular filter was recommended by my HVAC service provider.On most furnaces, the "door" to the filter compartment just pops off - the only caveat is that you need to make sure to position it correctly with the "air flow" arrow pointing in the right position. The used filter fits nicely into a trash bag and in most locations, can be thrown out with the rest of the trash or placed into a dumpster for removal. I'm not the best DIy'er, but this is one chore that even I can do!