Features: Experience enhances cooling performances with our double purpose Fan Blower Outlet, a accessory to optimizes airflows for your server's violent fans. Crafted from durability plastic, this Air Gathering Vent fit both 4cm/ 6cm fan, streamlining the connection to ducts while focusing the air efficiently. Suitable for IT professionals and tech enthusiasts look to boost their computer systems' thermal management without compromising on space or efficiency. The Fan Blower Outlet is perfect for applications requiring smokes exhaust, air exchange, or combustion support, making it a valuable addition to any server room or workshop. Simplify your cooling setups with this easy to install fan accessory that not only enhances performances but also maintains a clean and organized workspaces by reducing cluttered connections. Specifications: Component:Plastic Size:Approx.80x40x60mm/3.15x1.57x2.36inch Inner Diameter of Circular Tube:3.7cm/1.46inch Circular Tube Outer Diameter:4cm/1.57inch Option Type:Air Gathering Vent for 6cm Fan;Air Gathering Vent for 4cm Fan; Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color. Package includes: 1pc Air Gathering Vent