The Indoor Manifold Assembly Kit with Gas Proportional Valve (for LP) is designed for Rheem tankless water heaters, specifically the RTG series. This assembly ensures efficient gas flow and optimal performance, featuring durable materials that withstand high temperatures. The kit includes a gas proportional valve, essential for maintaining consistent gas pressure, enhancing safety and efficiency. With dimensions tailored for easy installation, this manifold assembly is compliant with industry standards, ensuring reliability in residential and commercial applications.