Features: Experience powerful ventilation with our 110mm duct exhaust fan, featuring a 12v clip on speed control switch for customizable airflows. Designed for efficiency, this fan boasts a robusts 160m³/h air volumes and a high speed rotation of 4000rpm, all while maintaining a low noise level under 39db. For diyer enthusiasts and professional alike, this versatiled tool is perfect for anyone needing reliable exhaust or intake solution in various settings. Transform any kitchen, bathroom, workshop, or outdoor bbq area into a smokefree zone with the easy to install fan that connects seamlessly to 110mm diameter ducts. Enhances your environment with our exhaust fan, ensuring a cleaner and more comfortable space whether you're cooking, repairing electronics, or enjoying outdoor picnics. Specifications: Size:Approx.11.4x11.4cm/4.49x4.49inch Color:White Package Includes: 1 Set Speed Control Switch note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorings of the item. Thanks for your understandings.