The Rheem SP20914D is an 8-inch back-to-back direct vent header kit, perfect for multi-unit heating applications. This kit includes five units, designed for efficient venting and optimal performance in residential and commercial settings. Made from high-quality materials, it ensures durability and compliance with industry standards. The dimensions are specifically tailored for seamless integration with Rheem heating systems, providing reliability and ease of installation. This header kit ships directly from the manufacturer, ensuring you receive a product that meets your needs for effective venting.