Round duct reducer from 100mm to 150mm. This one-piece forming ABS reducer provides excellent sealing and is wear-resistant with a smooth surface for easy installation on various vent pipes. Ideal for solving duct size transition issues. Suitable for use with clothes dryers, bathroom fans, kitchen extractor fans, hydroponics, and more. This duct reducer can be used as part of a duct system for applications such as whole house ventilation, passive chimney vents, positive air inlets, air conditioning, and heat recovery systems. Made from high-quality ABS material, it offers corrosion resistance and high durability. The seamless one-piece molded design ensures leak-proof and robust performance. Compatible with rigid plastic duct systems—seal with duct tape or putty. Also compatible with flexible duct systems—secure with a hose clamp. Perfect for use with clothes dryer vents, bathroom or kitchen exhaust systems, hydroponic setups, inline exhaust fans, or range hoods. Features: - Made from new ABS material, resistant to corrosion and deformation - Optimized design with smooth interior to reduce airflow resistance - Seamless construction for superior sealing performance - Suitable for both indoor and outdoor applications Installation: 1. Attach the duct pipe to the reducer. 2. Secure the connection with aluminum foil tape. 3. Place a hose clamp over the joint and tighten with a screwdriver.