1、Decorative Design: Enhance the look of your RV, boats, and yachts with these 3 inch stainless steel vent covers, adding a touch of elegance and sophistication. 2、Wide Application: Suitable for marine use, these vent covers can be installed on ceilings or walls in RVs, campers, boats, and more. Easy to clean and remove for convenience. 3、Premium Material: Crafted from ABS and marine grade 316 stainless steel, these grille vent covers are tough, safe, sturdy, and rust resistant for peace of mind. 4、Easy Installation: The round ventilation covers can be embedded installed with a 3in to 3.2in pipe size. Ideal for yacht, motorhome, RV, and bus doors, stairs, and roof. 5、Practical and Versatile: This set includes 4 high polished stainless steel vent covers for airflow efficiency and aesthetic appeal. Suitable for various marine vehicles and applications.