Features: The 5x4 inch vent reducer provides a seamless and leak proof connection for upgrading ventilation systems, ensuring optimal airflows in large power ranges hoods, exhaust fans, and dryer vents with its versatile duct adapter design. Crafted from strong stainless steel, this reducer features a sturdy single wall construction that maintains shape integrity, allowing easy installation using tape or clamps for a secure change between rigid metal pipe and flexible aluminum foil ducts. Ideal for homeowners and professional installers, this ventilation adapter simplifies ventilation projects, making it accessible for anyone enhancing home airflows efficiency. Perfect for use in kitchens, laundry rooms, or bathrooms, this duct reducer connects to exhaust systems for ranges hoods, fans, or dryers, facilitating smooth airflows change in residential ventilation setups. Designed for easy online installation in straight pipe or as a wall vent change , this vent reducer ensures stable performances and efficient airflows management in any house improvement scenario. Specifications: Component : stainlesss steel Height: about 120mm/4.72inch Thickness: about 0.6mm/0.02inch Package Includes: 1xDuct Reducer Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.