Sea-Dog
4" Stainless steel butterfly vent
4" Stainless steel butterfly vent
331440
These flush-mount stainless steel butterfly vents open and close with a knob in the center. They are held in place by #6 screws.
2.77 si nfa (square inches of net free ventilation area).
Made in China.
Orders placed by 3 pm MT will ship the next business day.