FIELD CONTROLS Draft Control,12.6 N Capcty,3 to 5in dia

3-5 In.dia SS Barometric Draft Control; Damper Application Barometric Draft Control; For Nominal Duct Diameter 3 in; 4 in; 5 in; Frame Material Steel; Number of Panels Not Applicable; Maximum Air Velocity Not Applicable; Overall Height 4 5/8 in; Rough Opening Diameter 4 in; Rough Opening Shape Round; Fits Fan Diameter Not Applicable; For Duct Shape Round; Free Area Not Applicable; Overall Width 4 5/8 in; Frame Material Thickness 22 ga; Overall Length 7 in; Connection Type Press Fit