The Nelson AA561 pipe choke system PCS 1.5”firestop is an essential equipment for any industrial or commercial setting. This high-quality system is designed to provide maximum safety and protection against fire hazards. It is made from durable materials and features a reliable pipe choke mechanism that ensures efficient performance and long-lasting durability. Whether you are looking to upgrade your existing fire protection system or seeking a comprehensive solution for your business, the Nelson AA561 pipe choke system PCS 1.5”firestop is the perfect choice. With its superior design and advanced features, this system is sure to meet all your fire safety needs. It is easy to install and use, and is compatible with a wide range of industrial and commercial settings.