The Montague 2038-9 Burner Twin Plate Air Shutter helps regulate airflow for proper gas mixing and consistent burner performance. Designed with two slots and a .463-inch orifice hole, this component controls the amount of air entering the burner assembly before combustion. By supporting the correct air-to-gas ratio, it helps promote a stable flame, even heat distribution, and efficien... https://partsfe.ca/2038-9-montague-air-shutter