What you see is what you get Product reduces viruses, odors, and mold allergens and dust Verified zero ozone installs to existing air conditioning or heating system air ducts actively purifies air pollutants at the source using aghp-cell technology recreates natures process of purifying air Our knowledge of this item is very limited. We are counting upon you to know what you are buying and if this item will suit your needs. This is being sold AS-IS. No returns. Please only purchase this if you agree to those terms. We take our reputation seriously, we buy and sell online, so we understand the value of trust! If you are unsatisfied with your order, please contact us and we will work with you to resolve it to your satisfaction! Thanks for looking at our listing and supporting our small family business! N-6 LB