Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1] Winterizing | Water Flushing Systems Keep your boat’s cockpit dry

Keep your boat’s cockpit dry and protected with our 3/4" Inline Scupper Check Valve

Flange Diameter (D): 1‑11/16″

Designed for versatile installation

This Flush Mount Rod Holder with Stainless Top is constructed of UV resistant injection molded ABS with a stainless steel top cap

ensuring excellent visibility throughout your vessel

Sea-Dog Stainless Steel Butterfly Vent - Center Knob - 4" [331440-1] Winterizing | Water Flushing Systems Keep your boat’s cockpit dryStainless 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.