The product is a mixed flow taper reducer, designed to reduce the diameter from 400mm to 355mm. Made from metallic material and with a height, diameter, and depth of 8 inches, this item is manufactured in the United Kingdom. It is intended for use in extractor fans to improve air quality and circulation, specifically in heating, cooling, and air systems. With a metallic finish, this taper reducer adds a sleek and modern touch to any home or DIY project requiring improved ventilation.