The Rheem AP12531 Low NOx Manifold is engineered for 5-burner gas water heaters, promoting cleaner combustion and reduced emissions. This manifold is constructed from durable materials, ensuring longevity and reliability. It features precise fittings for easy installation, although orifice and tubes are not included. Measuring 12 x 6 x 4 inches, it is designed to fit various Rheem models. This component meets stringent environmental standards, making it an ideal choice for eco-conscious consumers seeking efficient water heating solutions.