Keep your refrigerator and freezer smelling clean with the Smart Choice PureAir(R) Universal Air Filter. The PureAir(R) air filter is designed with active carbon to remove, not mask unwanted odors. The PureAir(R) filter tested 7X better than the leading baking soda manufacturer in keeping the air in your refrigerator smelling fresh. The PureAir(R) Starter Pack comes with a carbon air filter and a filter housing with an adhesive backing and can be used in any refrigerator, freezer, laundry room, locker room or closet.