3M COMPANY HOME00-4 16x20x1Odor Reducing Filter Filtrete, 16x 20x 1, home odor reduction filter, effective tool for removing undesired smells such as smoke, pet odor, Mildew, & noxious cleaning chemical 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