Metal Reducers are high-quality galvanized metal fittings designed to reduce or enlarge duct sizes to ensure compatibility between different duct sections. These male spigot reducers fit inside round metal ducting and provide a seamless transition between various duct diameters. Perfect for ventilation systems, kitchen and bathroom extractor fans, HVAC systems, and more. Manufactured in the UK, these reducers are durable and reliable for both residential and commercial applications.