FIELD CONTROLS Draft Control,38.5 N Capcty,6 to 8in dia

6-8 In.dia SS Barometric Draft Control; Damper Application Barometric Draft Control; For Nominal Duct Diameter 6 in; 7 in; 8 in; Frame Material Steel; Number of Panels Not Applicable; Maximum Air Velocity Not Applicable; Overall Height 7 5/8 in; Rough Opening Diameter 7 in; Rough Opening Shape Round; Fits Fan Diameter Not Applicable; For Duct Shape Round; Free Area Not Applicable; Overall Width 7 5/8 in; Frame Material Thickness 24 ga; Overall Length 8 5/8 in; Connection Type Press Fit