The 4" Female Coupling x Female Iron Pipe Type D - Aluminum is a robust and reliable pipe fitting designed for easy and secure connections in fluid and gas transfer systems. Featuring a female coupling on one end and a female iron pipe (FIP) connection on the other, this fitting is perfect for connecting to male-threaded pipes. Made from corrosion-resistant aluminum, it combines lightweight construction with strength and durability, making it ideal for use in plumbing, HVAC, and industrial systems. The Type D design ensures a leak-proof seal, ensuring optimal flow in a wide range of applications.