Durable and sturdy material: The 6-inch to 4-inch air duct reducer is made of 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 tight docking and improve ventilation efficiencySufficient quantity: Two ventilation adapters per package for the dryer to you have sufficient ventilation needs; The quantity is sufficient to use and replace, and can also be shared with your friends and othersApplicable size: The dryer pipe connector is suitable for 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 ventilation needs;On 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 and requirementsConvenient 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 ; 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 connectionsWidely 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 settings, and its multifunctional size makes it suitable for most ventilation system upgrades or repairsColour:WhiteMaterial:PlasticPackage Contents:2 * Pipe Connector