Round duct reducer from 100mm to 150mm. It is a once-forming PVC reducer with good sealing, wear-resistant. Smooth surface, easy to install on a variety of vent pipes. Perfect solution to the problem of reduced ductwork. Perfect for your clothes airer, bathroom fan or extractor fan kitchen, hydroponics, etc. Product Duct Reducer This reducer can be used as part of a long duct line to various purposes including whole house ventilation, passive chimney vent, positive inlet, air conditioning and heat recovery systems. Made of ABS materials, corrosion resistance , high hardness. One piece molding ABS reducer, leak proof and explosion proof. Can be used with rigid plastic duct systems - seal with putty or tape. Can be used with flexible duct systems - seal with the hose clip. Perfectly suited for the ductwork of your clothes dryer, bathroom or kitchen extractor, hydroponics, extract fans in line, or range hood. Details Made of ABS new material, corrosion resistant and not easy to deform. Reasonable over-design , smooth interior makes the wind resistance rate lower. The seamless structure, good sealing effect, indoor and outdoor universal. Installation diagram 1, Attach the pipe to the duct reducer. 2, Use aluminum tape to secure the interface. 3, Put on the hose clamp and tighten it with a screwdriver.