Field Controls Part #Mgii-32 - Draft Control (1967201) Size_11 x 15 x 5/16 Because it is double-acting

Because it is double-acting

7-1/4"_ x 7-1/4"_ Plate - 4 Bolt Holes

Curved to a 14" Radius on the Long Axis (Y-Type)

Burnham Part Number 7172940

87" Diameter

Field Controls Part #Mgii-32 - Draft Control (1967201) Size_11 x 15 x 5/16 Because it is double-acting32" MG 1 Barometric Damper Triple Acting for Oil, Gas, Wood & Coal Fired Solid, Oil or Gas Commercial Industrial This is a series of compact, rugged, heavy duty controls for use on large residential, commercial, and industrial applications. The Field Type M+MG2 Draft Control provides precise draft regulations for solid fuels, oil, gas, or oil gas appliances requiring only the simplest, on the job adjustments depending on which fuel is to be utilized.