The Rheem SP20916C is a 10-inch back-to-back direct vent header kit designed for efficient venting in multi-unit applications. This kit includes four units, ensuring optimal performance and compliance with industry standards. Constructed from durable materials, it is engineered to withstand high temperatures and pressures, making it suitable for various heating systems. The dimensions and specifications are tailored for seamless integration with Rheem products, ensuring compatibility and reliability. Ideal for residential and commercial installations, this header kit ships directly from the manufacturer, providing convenience and peace of mind.