50-plate Outdoor Wood Furnace Brazed Plate Heat Exchanger, 5"x12", 1-1/4" MNPT, up to 650,000 BTU/hr

This item works great. Installed hydronic heating in the floor or our house with an outdoor boiler and this unit does an outstanding job for it's small size. I will be getting a smaller unit to attach to our water heater. Thank you for the quick service and outstanding customer support.