Features: Enhances your cooling efficiency with our 6cm Fan Nozzle , to concentrate airflows for optimals management. This nozzle features a 30mm inner diameter and a 35mm outer diameter, for standard 6x6cm cooling fans and blowers. For technology enthusiasts and professional to improve their computer's ventilation or projects requiring targeted air circulation. Perfect for use in extraction, air replacement, and combustion supporting applications, this fan nozzle for both home and industrial environment. Simplifies your setups with round shaped concentrator that easily connection to ducts, offering a streamlined solution for enhancing your system's airflows dynamics. Specifications: For 6cm Fan Nozzle Inner Diameter：about 30mm Outer Diameter：about 35mm Type: Not with Net/ with Net Package Includes: 1PC Fan Nozzle note: Due to the problem of lighting effects there is certain tolerances in product, please understand. Please allow 0-1cm error due to the measurement.