Maintain superior control over your indoor environment with AllergyZone VentDefense Filter Media. Over time, dust can accumulate inside your home's ductwork. When the HVAC system cycles on/off, surges of air may dislodge built up dirt and deposit it inside your home. VentDefense creates a final barrier of protection against unhealthy airborne particulates. VentDefense is easy to install. Simply cut it to fit using common household scissors and place it inside the air supply grill, or attach it to the outside of the grill with the velco included in the package. For best results, use VentDefense in rooms where the majority of your time is spent (bedroom, living room). Do no use VentDefense in every room in your home.
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