Imperial 5"x4" 24 Gauge Galvanized Taper Reducer with Crimp on Small End, made of galvanized steel, allows for a smooth transition from a 5-inch diameter round pipe to a 4-inch diameter round pipe. Its 24-gauge construction ensures optimal heat efficiency and long-term durability. The crimped end seamlessly fits into pipes or fittings of the same diameter, making installation a breeze. Ideal for reducing the diameter of galvanized round perimeter pipes, this reducer is suitable for all heating, air conditioning, and venting applications where rigid pipes are required. Comes in Boxed Packaging.