The Vulcan Hart VH404060-3 Burner Air Shutter helps regulate the air entering a compatible gas burner to support proper fuel combustion and steady flame performance. This double-plate cast iron air shutter measures 2-3/4 inches in outside diameter and is designed to fit the corresponding burner assembly. By adjusting the opening through which air enters, it helps control the air-to-ga... https://partsfe.ca/vh404060-3-vulcan-hart-air-shutter-2-12