These Five Oceans' low profile vents are a great way to supplement solar or 12V ventilating systems, and they are commonly used as bilge ventilators with or without a powered blower.
The soft, flexible PVC is safer than metal or other types of rigid vents because it deforms if accidentally stepped on, and then springs back to shape. They have a stylish red interior and include deck ring and cap.
DURABLE and flexible unit has soft-white and red interior PVC
COWL VENT ALLOWS proper ventilation to help prevent moisture accumulation and keep your boat fresh with no use of power
GREAT for bilge ventilation with or without a blower. Includes Snap-on Deck Plate and cover
DESIGNED to withstand harsh marine environments
CUTOUT size is 4 1/2" and the height above deck is 5".