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The product is prefabricated galleries consisting of aggregate, cement, reinforcement, insulation and the necessary cast-in-material (including insulated connectors) for transport and assembling. The product is mainly used in residential buildings. The product fulfils the requirements of SS- EN 13369:2018 Common rules for precast concrete products. Technical specifications: Concrete strength C30/37. Exposure classes, top surface XD3+XF4 and bottom surface XC3+XF1. Life length class up to L50 (50 years). Fire class R30. Typical dimensions are: Length of element 6,0 m. Width of element 2,4 m. Thickness at highest point of element 200 mm. Thickness of stone wool insulation 80 mm.