VEVOR 18"x 20" Heat Exchanger Water to Air 3-Row 3/8" Copper Ports 242 Fins Thickened Interface High Efficiency and Energy Saving Dual Use Multiple Sizes Available High Compatibility Secure to Use Operating Temperature: -40C-180C / -40F -356F,Main Materials: Copper,Maximum Working Pressure: 2.5MPa,Plate Area: 18 x 20 in / 45.72 x 50.8 cm,Heat Capacity: 133K BTU,Number of Aluminum Fins: 242 Pcs,Color: Gold,Model: C1820,Number of Copper Tubes: 3-Row 3/8",Product Dimensions (L x W x H): 25.59x18.03x3.62" / 650x458x92 mm,Net Weight (with Accessories): 17.64lb / 8kg