Good Ventilation: The boats cowl ventilator can bring good ventilation, which could remove moisture from the boat interior, keeping the boat a good comfortable environment. Material: The cowl vent is made of premium 304 stainless steel, with quality nylon base, high strength, sturdy and durable, and they can bear harsh environments. Function: It helps boat interior stay odor free and prevent corrosion. Application: High performance and classic appearance, the ventilator is commonly used for marine cockpit, engine ventilation, etc. Size: L: 123mm, W: 147.4mm, H: 72mm. Well match with the overall style of your boat. Specification: Material: Nylon, 304 Stainless Steel Type: Vent with Nylon Base Color: Gray Size Chart: 72x147.4MM/2.83x5.80inch Package Includes: 1 Piece Boat Vent With Nylon Base Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!