3M - Filtrete 18 in. W X 24 in. H X 1 in. D 7 MERV Pleated Air Filter 1 pk - Case of 4

Deep‑pleat media filters like this are designed to give whole‑house systems higher allergen capture and longer life than standard 1‑inch panels. With a 1550 MPR (MERV 12) rating and electrostatically charged polyester media, the 20x25x4 filter is engineered to pull in and trap countless microparticles such as pet dander, smoke, smog, bacteria, and around half of small virus‑carrying particles, while also capturing larger debris.

Designed to work inside standard home HVAC equipment, this pleated air filter helps clean circulating air as it moves through your furnace or air conditioner. Its electrostatically charged polypropylene media, rated at 700 MPR, is formulated to capture everyday particles such as household dust, lint, pollen, and pet dander while maintaining suitable airflow in compatible systems.

Dust, lint, and dust‑mite debris are common in return air, and this pleated panel is aimed at reducing that everyday load without over‑restricting airflow. With a 300 MPR (MERV 5) rating and Filtrete 3‑in‑1 electrostatic media, the 18x24x1 Basic Dust filter is designed to attract and capture larger household particles as air passes through your furnace or AC.