3M COMPANY HOME03-4 20x25x1Odor Reducing Filter Filtrete, 20x 25x 1, home odor reduction filter, effective tool for removing undesired smells such as smoke, pet odor, Mildew, & noxious cleaning chemicals Adds Extra shine to your product Manufactured in China Home Odor Reduction Filter Effective Tool For Removing Undesired Smells Such As Smoke, Pet Odor, Mildew, & Noxious Cleaning Chemicals It Attracts & Captures Microscopic Allergens Like Pet Dander, Smoke, Dust, & Microscopic Particles That Can Carry Bacteria, Viruses & Odors