Features: Enhances your cooling efficiency with 8cm Fan Duct Nozzle Adapter, to concentrate for heat dissipation. from plastic, this adapter features 45mm inner diameter and 50mm outer diameter, ensuring for standard 8x8cm cooling fans and blowers. for enthusiasts and professional to improve their computers thermals management or DIY projects requiring. for use in Smokes extraction, air exchange, and combustion supporting applications, this fan nozzle adapter for various environmental setups. Simplifys your cooling systems maintenance by easily connecting this adapter to ducting tubes, making it a practical addition to any PC or ventilation project. Specifications: Material: Plastic Square side length 8x8cm, height 8cm, inner diameter of circular tube 4.5cm, outer diameter 5cm Style: with net, without net(optional) Package Includes: 1PC Air Vent Duct Connectors note: Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. Due to the differences between different monitors, the picture may not reflect the actual of the item.