logo Exceeded air tightness expectations Itella’s logistics centre exceeded air tightness expectations External walls built using Ruukki’s energy panel system. Annual energy savings of €25,000 - €40,000. Energy panel system pays for itself in a few years The walls of the logistics centre were built using Ruukki’s energy panel system, which can reduce the annual energy bill by €25,000 - €40,000. ? The building’s air tightness rate (n50) was 0.15,

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