Specifically for 5V, 12V, and 24V 7530 Centrifugal Fans, ensuring optimal efficiency. Crafted from stainless steel, this air duct features 28mm diameter and comes10cm length, perfect for extending the reach of your fan Suitable for professional cooks alike, this air duct is perfect for anyone looking to improve ventilation and temperature control in their cooking Perfect for use in kitchens, BBQs, smokehouses, and more, this air duct allows you to connection or extend 7530 centrifugal fan, enhancing its in various environments. Ensures proper fit by checking your fan's outlet size before purchasing; this versatile air duct is suitable for applications, making it a must have accessory for any serious cook.