Ⅰ. Made of ABS material. Ⅱ. High strength and corrosion resistance. Ⅲ. Smooth, small air resistance. Ⅳ. For connections between pipes. Ⅴ. Installed on the wall as a ventilation duct. Ⅵ. Can be used as air inlet and outlet, installed in indoor ventilation equipment. Ⅶ. Material: ABS Ⅷ. Colour: Black Ⅸ. Size: 100MM, 110MM, 150MM, 200MM Ⅹ. Quantity: 1PCS Ⅺ. List 1: 1 x Flange Connector Ⅻ. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. XIII. Please allow slight manual measurement deviation for the data. XIV. This product is crafted with materials to ensure its durability and longevity. Whether for daily use or special occasions, it provides performance and a user experience. XV. Offering performance and quality at a reasonable price, this product offers value for money. Whether for your own use or as a gift, it is a cost-effective choice and worth every penny. XVI. We offer 30 days returns. If you are not satisfied with the product, you can return it within 30 days. We are committed to ensuring that every customer's shopping experience is of standard. XVII. This product has been designed to be compatible with a range of devices and scenarios. No matter which model or brand you use, it can be easily adapted to provide experience. XVIII. The product design is simple and clear, and the operation is easy to understand, even for the first time. Whether you are a novice or a veteran, you can quickly master it and enjoy convenience and efficiency.