Product Specifications Dimensions (L x W): 7.6" x 5.0" Heating Capacity (BTU): 120,000-160,000 Number of Plates: 30 Maximum Operating Pressure, PSI: 481 Maximum Operating Temperature, F: 445 Maximum Flow, GPM: 50 Face Area: 0.33 Square Feet Applications: Hot Water, Glycol Channel Volume, Gallon: 0.012 Water Supply/Return Connections: 1" Weight (Lbs): 13 Applications: Radiant Floor and Central Hydronic Heating Systems. Solar and Geothermal Systems. Snow Melt Systems. Domestic Hot Water (DHW) Systems. Swimming Pool and Spas Systems. Outdoor Wood or Coal Burning Boilers. Condensers and evaporators refrigeration systems .