• SeaLux Marine Round Butterfly Vent with Center Knob Stainless Steel available in 4" or 5" or 6"
• Commonly use for Marine Companionway Door, Cockpit, Cabin Ventilation, or use for household shed or additions.
• Butterfly vent install inside of the cabin, and outside use SeaLux standard Round Louvered Vent
• Made of Marine Grade 304 Stainless Steel, Highly Mirror Polished.
• Turn Side Knob to open or close.

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