Durable and sturdy material: The 6-inch to 4-inch air duct reducer is made of high-quality ABS material, and the design of the air duct reducer has a long service life; Not only beautiful and elegant, but also waterproof and not easily deformed, suitable for outdoor or indoor use; Smooth and neat edges ensure tight docking and improve ventilation efficiency Sufficient quantity: Two ventilation adapters per package for the dryer to ensure you have sufficient ventilation needs; The quantity is sufficient for you to use and replace, and can also be shared with your friends and others Applicable size: The dryer pipe connector is suitable for various sizes of air ducts, and sizes ranging from 100mm to 150mm are perfect for connecting 6-inch and 4-inch air ducts, making it a wise accessory to meet various ventilation needs; On the one hand, the outer diameter size of the 150mm pipeline reducer is 6.18 inches and the inner diameter size is 5.90 inches; On the other hand, the outer diameter size of the 100mm pipeline reducer is 3.89 inches and the inner diameter size is 3.66 inches, which can meet your daily needs and requirements Convenient and easy to install: 4-inch pipe connectors are a suitable solution for homeowners who want to improve ventilation systems but do not want to hire professionals; Its design makes it easy to install without the need for other tools; Glue, tape, or steel clips can also be used to achieve stronger connections Widely applicable: This 6-4-inch air duct reducer is commonly used in residential and commercial ventilation systems, HVAC systems, air conditioning, range hoods, garages, attics, bathrooms, kitchen fans, etc; The air duct reducer is very suitable for various settings, and its multifunctional size makes it suitable for most ventilation system upgrades or repairs Colour:White Material:Plastic Package Contents: 2 * HAVC Pipe Connector Only the above package conte Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!