The Bonnet Only for 4" 10RT/RW by Matco Norca is a critical replacement part designed for 4-inch 10RT/RW systems. This bonnet is crafted from high-quality materials to ensure durability and longevity in various applications. It provides a secure seal and is engineered to meet industry standards, ensuring compatibility with existing systems. The precise design allows for easy installation and maintenance, making it an essential component for ensuring optimal performance in plumbing and industrial settings. Upgrade your system with this reliable bonnet to maintain efficiency and safety.