Purity Max Air Filter. Developed under the guidance of a physician, these air filters are engineered to act as an excellent defense against airborne allergens in the home or any indoor environment. Recommended for anyone suffering from allergy symptoms. Electrostatic charge attracts and holds microscopic particles like a magnet. A unique EPA registered anti-microbial treatment destroys and restricts surface growth of various bacteria, mold, and mildew. Tax deductible when prescribed by a doctor. For central furnace and air conditioning systems. No. DCCS6 Includes: 4 filters, plus 1 permanent adjustable frame that fits sizes: 10 x 20, 14 x 20, 16 x 20, 16 x 25, 20 x 20, and 20 x 25. To renew the filter, simply pull off the soiled filter and dispose. The reusable frame includes special Velcro strips that hold the filtration material securely. A fresh cut-to-fit filter is then pressed back onto the frame replacing the used one. Full year supply.

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