The 4" Copper Bonnet by Fittings Unlimited Inc is engineered for optimal performance in plumbing and HVAC applications. This robust copper bonnet is 4 inches in diameter, providing a reliable seal for various fittings. Its copper construction offers excellent resistance to corrosion and high temperatures, making it suitable for both hot and cold water systems. This product complies with industry standards, ensuring safety and reliability in all installations. Ideal for professionals seeking quality and durability in their plumbing components.