About This Item
Engineered for small HVAC returns, this 14 x 14 x 1-inch Filtrete Allergen Defense filter uses pleated electrostatic media with 3‑in‑1 technology to help clean recirculated air in residential furnaces and central AC systems. With a 1000 MPR (MERV 11) rating, it is designed to attract and capture microscopic particles such as pet dander, smoke, and smog, along with larger allergens.
