About This Item
This 25 x 25 x 1-inch Filtrete Allergen Defense filter is a pleated electrostatic HVAC filter designed to upgrade whole‑home air quality in residential furnaces and central air systems. Using Filtrete 3‑in‑1 technology with a 1000 MPR (MERV 11) rating, it helps capture microscopic particles such as pet dander, smoke, smog, and dust mite debris, and is intended for replacement about every 90 days in typical home conditions.
