... Technical Specification: Manifold Casing Material: AluminumFrame Material: AluminumHeader Pipe Material: Copper Heat Pipe Material: Copper Insulation: Rock Wool Rubber ... KEYMARK,SRCC,EN12975-SOLAR KEYMARK,SRCC, Material Vacuum tubehigh borosilicate glass(58mm*1800mm)CoatingSS ... dia14mm, body dia 8mmManifold header pipeTP2 copper dia 35mmManifold casinganodized aluminum alloyInsulationrock wool with ...