✅ Marine-Grade Durability – Made from AISI 316 non-magnetic stainless steel, highly resistant to corrosion, oxidizing acids, and salt spray—ideal for boats and humid environments. ✅ Adjustable Airflow – Easily regulate airflow with the adjustable grille that can be set to open, close, or a middle position. ✅ Slim & Sleek Design – Low-profile frame with clean edges for a modern, seamless look. Refer to photo #2 for precise measurements. ✅ Extreme Heat Resistance – Withstands up to 1202°F (650°C), perfect as a heat diffuser in high-temperature setups. 🪛 Hassle-Free Installation – Includes galvanized self-tapping screws and 0.2" (5mm) plastic wall anchors for quick, secure mounting on any surface. Crafted from premium stainless steel AISI 316, this adjustable ventilation grille offers long-lasting performance, even in humid or marine environments. Ideal for bathrooms, kitchens, closets, and boats, it resists rust and salt corrosion. Its sleek design blends into any space, while the adjustable mechanism lets you control airflow—fully open, closed, or midway. Available in 9x6", 6x6", and 9x3" sizes, it’s a trusted choice for both residential and marine ventilation.