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Description:Glass tube:70x2000mm Inner tank material:ss3042b food grade,thickness 0.5mm,hole distance 10cm; Out tank material:galuanized aluminum sheet.Out dia.490mm Frame material:galuanized aluminum sheet mould forming with powder painting,strengthened tail support Vacuum tubes:three "high"new tecnology tube with 30% higher performance Insulation:50-60mm polyurethane total forming with pressure and best density 40kgs/m3 Available sizes:12,14,16,18,20,24 up to 30 tubes with tank capacity 144ltr-369ltr