The W.H. for 4" 100F from MATCO NORCA is a high-quality water heater designed for efficient heating in residential and commercial applications. This unit is engineered to provide reliable performance, ensuring optimal water temperature control. Its compact design allows for easy installation in various settings, while the durable construction guarantees longevity. The 4" size is ideal for standard plumbing systems, making it a versatile choice for both new installations and replacements. This water heater meets industry standards for safety and efficiency, ensuring compliance with relevant regulations.