Suburban | Replacement Furnace Core | 2612A | RP-16NEQ | 16,000 BTU | Fits NT-16SEQ / NT-20SEQThe Suburban 2612A (RP 16NEQ) Furnace Core is a Quick, Hassle Free Furnace Core Upgrade for Your RV. Restore the warmth and reliability of your RVs heating system with the Suburban 2612A Furnace Core Replacement. Designed for quick installation, this 16,000 BTU propane furnace core lets you replace only the internal componentsno need to remove the cabinet or disconnect any ductwork. That means less labor, lower costs, and less time spent off the road.