The EnviroKlenz HVAC Filter is specifically designed to remove odors and chemical pollutants from air spaces in the home. It was inspired by the special needs of people with Multiple Chemical Sensitivities (MCS), who require a home environment as free from toxic chemicals as possible. This technology captures and destroys chemicals and odors for true elimination.A unique and advanced manufacturing process greatly enhances the beneficial neutralizing properties of the earth minerals and retain their natural safety characteristics. The earth minerals may include Magnesium Oxide (MgO), Zinc Oxide (ZnO), and Titanium Dioxide (TiO2). For a 10% discount on your entire purchase, enter coupon code “toxicfree10” at checkout.