Engineered for homes that want stronger protection from airborne allergens, this ultra-allergen filter helps your HVAC system capture a broad mix of fine and larger particles each time it runs. Its electrostatically charged synthetic media carries a 1500 MPR (MERV 12) rating and uses Filtrete 3‑in‑1 technology to draw in and trap countless microparticles such as pet dander, smoke, bacteria, and up to about half of airborne virus‑carrying particles.