Product Description From industry-leading technologies to next- generation energy efficiencies, Rheem has been a pioneer in developing some of the most innovative advancements in heating, cooling and water heating. With a long list of award-winning solutions, Rheem continues to deliver advanced comfort, savings and experiences to our customers—just as we’ve done for nearly 100 years. From the Manufacturer The Rheem RTG20217XG is a tankless pipe cover kit. HVAC replacement part Rheem RTG20217XG. Get your system working properly once again with replacement parts.