... world4,Dimension:dia,28*1200mm,dia,28*1500mm,dia,47*1500mm,dia,47*1500mmdia,58*1800mm,70*2000mm5,High resistance to the wind ... roof installations)Maximum Operating Pressure12 bar (175 psi)Vacuum tubeØ58-1800mm co-axial structure high borosilicate 3.3 three-target ...