System of insulated entrance doors with high performance specifications in safety and thermal insulation and with modern aesthetics thanks to the uniform, evenly flat surfaces. The CUBE 70 series is a thermal break entrance system suitable for high specification constructions with panels or glazing in a wide range of typologies. Due to its robustness, it is suitable for applications where daily, frequent use is required, such as in single-family homes, apartment buildings and public buildings. It provides high thermal insulation, sound insulation and waterproofing, while combining timeless design with modern technology, and high aesthetics with top manufacturing standards