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. Hemispherical design helps reduce airflow resistance for improved efficiency. 45-degree inclined louvers help prevent rainwater ingress. Fixed buckle design enhances stability and helps prevent displacement. Constructed from 304 stainless steel for long-lasting durability. Available in nine sizes: 50mm, 60mm, 80mm, 100mm, 120mm, 150mm, 160mm, 180mm, and 200mm. Suitable for residential, commercial, and industrial applications including homes, restaurants, supermarkets, and office buildings. 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 actual product color may vary slightly from images. Slight dimensional variations may occur 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