50-200mm Anti-Rust Wall Air Vent Fixed Buckle Rainproof Polished Thickened Grille Ventilation Cover Exquisite and high-quality workmanship provides rust and corrosion resistance. The hemispherical design helps reduce airflow resistance for improved efficiency. The 45-degree inclined louvers help prevent rainwater from entering. The fixed buckle design ensures stability and helps prevent dislodging. Made of 304 stainless steel for durable, long-lasting performance. Available in nine sizes: 50mm, 60mm, 80mm, 100mm, 120mm, 150mm, 160mm, 180mm, and 200mm. Suitable for use in homes, restaurants, supermarkets, office buildings, and similar environments. Item Name: Stainless Steel Vent Outlet Material: 304 Stainless Steel Color: Silver Features: Fixed Buckle, Rust Resistant, Non-Slip Size Details: 50mm: Length: 12.5cm (4.92"), Width: 12.5cm (4.92"), Height: 10.3cm (4.06"), Punch Diameter: 5cm (1.97"), Installation Depth: 4cm (1.57") (Approx.) 60mm: Length: 12.5cm (4.92"), Width: 12.5cm (4.92"), Height: 10.3cm (4.06"), Punch Diameter: 6cm (2.36"), Installation Depth: 4cm (1.57") (Approx.) 80mm: Length: 12.5cm (4.92"), Width: 12.5cm (4.92"), Height: 10cm (3.94"), Punch Diameter: 8cm (3.15"), Installation Depth: 3.5cm (1.38") (Approx.) 100mm: Length: 14.5cm (5.71"), Width: 14.5cm (5.71"), Height: 11.3cm (4.45"), Punch Diameter: 10cm (3.94"), Installation Depth: 4cm (1.57") (Approx.) 120mm: Length: 14.5cm (5.71"), Width: 14.5cm (5.71"), Height: 12cm (4.72"), Punch Diameter: 12cm (4.72"), Installation Depth: 4.8cm (1.89") (Approx.) 150mm: Length: 18.5cm (7.28"), Width: 18.5cm (7.28"), Height: 14cm (5.51"), Punch Diameter: 15cm (5.91"), Installation Depth: 4.8cm (1.89") (Approx.) 160mm: Length: 19cm (7.48"), Width: 19cm (7.48"), Height: 15cm (5.91"), Punch Diameter: 16cm (6.3"), Installation Depth: 5.5cm (2.17") (Approx.) 180mm: Length: 22cm (8.66"), Width: 22cm (8.66"), Height: 17cm (6.69"), Punch Diameter: 18cm (7.09"), Installation Depth: 6cm (2.36") (Approx.) 200mm: Length: 22.5cm (8.86"), Width: 22.5cm (8.86"), Height: 17.3cm (6.81"), Punch Diameter: 20cm (7.87"), Installation Depth: 6cm (2.36") (Approx.) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight variations in dimensions due to manual measurement. The edges of the stainless steel vent are sharp. Handle with care. Wear gloves during installation. Keep out of reach of children. Package Includes: 1 x Stainless Steel Vent Outlet