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  • Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1]

    Stainless Steel Butterfly Vent - Center Knob - 4" 

    Butterfly Vents promote air flow preventing mold, mildew, and associated odors. Features a center knob that allows for easy adjustment of the opening. Corrosion resistant 304 stainless steel construction. Installs with four #6 RH fasteners (not included).

    WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.