![Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1]](http://www.shopbulluna.com/cdn/shop/products/77417XL.jpg?v=1634848709&width=1080)
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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).
WARNING: 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.