Exquisite and high-quality workmanship ensures rust-resistant and corrosion-resistant performance. The hemispherical design helps reduce resistance for improved efficiency. The 45-degree inclined louvers help prevent rainwater ingress. The fixed buckle design provides stability and drop resistance. Made of 304 stainless steel, this vent outlet offers durable long-term use. Available in nine sizes: 50mm, 60mm, 80mm, 100mm, 120mm, 150mm, 160mm, 180mm, and 200mm. Suitable for residential, commercial, and office building applications including homes, restaurants, supermarkets, and offices. 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 lighting and screen setting differences, the item's 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