Field Controls 8M Oil/Coal-Fired Heating Draft Control

Oil/Coal-Fired Heating Draft Control; Type Draft Control; Used On Residential Gas/Coal-Fired Heating Equipment; Overall Dimension 8-5/8 Inch Outer Diameter; Control Size 8 Inch; Nominal Capacity 50.3 Square Inch; Circumference 22 to 28-1/4 Inch; Material Thickness 20 Gauge (Ring/Gate), 24 Gauge (Collar); Approval UL (Canada and US)