The Star Mfg 5N22618 universal oven pre-filter hood is designed for compatible commercial kitchen ventilation systems. Measuring 16" X 20" X 2", this filter helps capture airborne grease particles and other contaminants before they reach downstream filtration components. It supports routine maintenance of ventilation equipment and helps keep the filtration system functioning effectively. https://partsfe.com/5n22618-star-mfg-pre-filter/1-5N22618.html