Nordic Pure 16x25x5 Pure Baking Soda pleated AC / furnace filters are what is considered the traditional 5” filter at an actual 4 3/8”. It can replace not only Honeywell but Lennox, Carrier, and Bryant filters. Of course, these are a list of the most well-known systems that use this size; always measure your filter housing to make sure the actual size correlates with the filter you are ordering. The filter media is made of electrostatically charged baking soda media equivalent to a MERV 8 rating. Our Pure Baking Soda filters help control, absorb and neutralize odors from pets, smoking, cooking and other undesirable smells. This filter does double duty to ensure the cleanest air in your home, gently removing strong smells, allergens, dust, mold spores, pollen and pet dander. Nordic pure air filters are treated to prohibit the growth of mold and bacteria on the filter’s material. For maximum odor control, we recommend that you replace your air filter every 3-6 months.