Marine-grade durability: Made from stainless steel 316 for long-lasting performance in harsh environments. Resists corrosion and pitting common in marine, coastal, and humid conditions so the vent stays functional and retains its finish over time. Practical airflow control: Adjustable louver design with a convenient side knob lets you easily open, close, or fine-tune airflow without tools. Controls ventilation precisely to reduce condensation, odors, and heat build-up. Sleek, hard-wearing finish: Polished mirror surface provides a clean, modern look while offering additional resistance to wear and easy cleaning. Ideal where appearance and durability both matter. Easy installation: Designed for straightforward mounting and quick setup on boats, ships, yachts, caravans (RVs) and in home applications. Installation and subsequent adjustments are user-friendly, saving time and effort. Versatile compatibility: Suited for cabin bulkheads, engine rooms, bathrooms, storage lockers, galley areas, and utility spaces. Functions the same across marine and terrestrial installations where controlled ventilation is needed. Key features at a glance Material: Stainless steel 316 — corrosion-resistant and suited for marine use Function: Adjustable ventilation grille with side knob opening for simple control Finish: Mirror-polished for an attractive, easy-to-clean surface Applications: Boats, ships, yachts, caravans (RVs), and domestic settings Practical use scenarios Boat cabin: Reduce condensation and improve air circulation between cabins and corridors by adjusting the grille to maintain comfort without compromising privacy. Engine room or equipment locker: Provide controlled ventilation to dissipate heat and fumes while keeping the grille closed or partially open as needed. Caravan or home bathroom: Prevent moisture build-up and odors in small spaces—adjust the vent to match weather and occupancy for better comfort and reduced maintenance. Why this product solves common problems Corrosion and short lifespan: 316 stainless steel prevents rapid degradation in salty or humid air, extending service life and reducing replacement frequency. Hard-to-control ventilation: The side knob mechanism provides immediate, tool-free adjustment so users can respond to changing conditions quickly. Unsightly hardware: The mirror-polished finish offers a discreet, professional appearance that blends with interior or exterior trim. Installation and care tips Mount using appropriate fasteners for your surface material; ensure a proper seal if used in exposed marine areas. Clean periodically with mild soap and water; avoid abrasive cleaners to preserve the mirror finish. Operate the side knob gently to set the desired airflow and avoid excessive force when adjusting. This adjustable stainless steel 316 ventilation grille combines durable construction, precise control, and a refined finish to meet the demands of marine and mobile environments as well as domestic installations.