This Kair Ducting Reducer connects 150mm ducting to 100mm ducting, ideal for ventilation systems. It features a 150mm female socket that accepts male fittings like connectors and grilles, and a 100mm male spigot that fits directly into 100mm straight ducting. For connection to 150mm straight pipe, a male connector is required, and for flexible hose, a hose clip or tape is needed for a secure seal. This reducer is suitable for a wide range of applications including tumble dryers, bathroom and kitchen extractor fans, hydroponics, inline extract fans, cooker hoods, whole house ventilation, passive stack ventilation, positive input, air conditioning, HVAC, and heat recovery systems. Made in the UK from high-quality white Polystyrene/Polypropylene, it can withstand temperatures from -15c to +60c. Fits standard Kair ducting and accessories.