Fantronix Round Ducting Reducer 125mm to 100mm - 5 to 4 inch Duct Pipe Reduction Connector for Extractor Fans Tumble Dryer Cooker Hood and Ventilation Units by Amazon.co.uk

• EASY TO INSTALL: Adaptor to convert between 125mm and 100mm ducting - 5 to 4 inch.This is a very practical robust solid duct reducer to be used when connecting two different plastic pipes, solid or flexible ducting together. Lightweight, quick, and easy to install.

• HIGH QUALITY MATERIAL: High-quality white Polystyrene/Polypropylene plastic Material. Max / Min Temperature: +60c / -15c. Designed and intended for use in the ventilation systems in both the inner and outer of the building, made of high-quality material, which is resistant to external factors (high quality PVC plastic).

• On one side there is a 125mm (5 inch) female spigot. Will fit over male fittings (bends etc). Requires additional 125mm male connector to connect round 125mm pipe.

• On the other side there is a 100mm (4 inch) male spigot. Will fit into 100mm straight ducting or 102mm flexible ducting.

• USES: Perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Fans, or Cooker Hoods and other ventilation applications. Does not corrode and get aesthetic appearance throughout the entire operating life. Keeps technical and hygienic properties in changing operating conditions.