Features: Strong Marine Vent Cover crafted from high strength plastic ensures erosion resistant performances and lightweight construction, featuring waterproof louvers that protect vessels from harsh marine environments while maintaining airflows . general design with reinforced plastic louvers adapts to most boat ventilation systems, offering rustproof durability and easy installation without tools for seamless integration with marine hardware. Essential for boat owners, yacht maintenance crews, and marine enthusiasts seeking stable , conscious ventilation solution that withstand saltwater exposure and extreme weather conditions. Perfect for safeguarding cabin airflows during stormy voyages or maintaining optimal ventilation in docked sailboats, fishing vessels, and luxury yachts expose to humid coastal climates. Engineered with recyclable marine grade polymer, this general boat vent cover combines environmental responsibility with hard performances, delivering year round defense against water ingress and UV degradation. Specifications: Component : plastic Size: about 12.1x33.6cm/4.76x13.23inch Package Includes: 1xMarine Louvered Vent Cover 8xScrew note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.