Technical data A. Dimension:2000*1000*90 B. Collecting area: 1.8M2 C. Frame material:Aerometal D. Flow pipe material: T1 pipe E. Insulation layer: Rock wool F. Thickness of Insulation: 50mm G. Heat efficiency: 45-50% H. Pressurance tolerance: 0.8Mpa I. Absorptivity: 95% J. Emissivity: 4%