1. Size adapter The ventilation pipe reducer adapter reduces 150 mm ducts to 100 mm to connect equipment with smaller ports to the ventilation duct system. It enables a seamless connection between devices such as bathroom fans, range hoods, and dust collectors and the main duct. 2. Material Made from durable plastic, these fittings are built for long lasting service. They withstand continuous use in a variety of environments, including homes, offices, kitchens, factories, and apartments. 3. Easy installation The duct pipe reducer connector is designed for straightforward installation. Attach it to the ends of the respective ducts using the included stainless steel clamps to form a secure, tight connection and minimize air leaks or disruptions in the ventilation system. 4. Usage With its white color, this adapter suits a wide range of settings. It is appropriate for residential, commercial, or industrial ventilation duct connections. Use scenarios Scenario 1: Connect a 150 mm main duct to a bathroom exhaust fan with a 100 mm inlet by using the reducer to step down from 150 mm to 100 mm. Scenario 2: Join a 150 mm duct to a 100 mm range hood or dust collector, enabling a single duct run. Scenario 3: Retrofit an office, kitchen, or workshop with a common 150 mm duct system and 100 mm air outlets for a consistent ventilation layout.