The Montague MONB26 Air Shutter Twin Plate 2 Slots enhances combustion airflow precision by providing controlled, balanced air regulation for compatible heating equipment. With a twin-plate, two-slot design, it adjusts the volume and distribution of incoming air through calibrated openings, allowing fine-tuned airflow management that supports efficient burner operation. This mechanica... https://partsfe.com/monb26-montague-air-shutter