ABS Variable Diameter Plastic Ventilation Pipe Reducing Joint Round duct reducer from 100 mm to 150 mm. A one-piece molded PVC reducer with excellent sealing and wear resistance. Smooth surface for easy installation on various vent pipes. Ideal for clothes dryers, bathroom fans, kitchen extractor fans, hydroponics systems, inline extract fans, and range hoods. This reducer is suitable for use in long duct runs for whole-house ventilation, passive chimney vents, positive air inlets, air conditioning systems, and heat recovery systems. Made from ABS material for corrosion resistance and high rigidity. One-piece molded ABS construction ensures leak resistance. Compatible with rigid plastic duct systems—seal with mastic or tape. Compatible with flexible duct systems—secure with hose clamps. Made from premium ABS material, resistant to corrosion and deformation. Optimized design with smooth interior surface reduces airflow resistance. Seamless construction provides reliable sealing for indoor and outdoor applications. Installation: 1. Connect the duct pipe to the reducer. 2. Seal the joint with aluminum foil tape. 3. Secure with a hose clamp and tighten using a screwdriver.