The invention relates to a construction made of metal-derived materials of greenhouses used in plant growing, characterized in that it is configured to reduce the number of parts used in the construction of the greenhouse (A) construction made of metal-derived materials, thus minimizing all costs including material supply, labor, time and installation and it comprises a main profile (1) forming the main component of the construction by connecting to the upper portion of the vertical profiles (2) of the greenhouse (A), and having side surfaces (1.1) formed in a flat structure in the opposite side sections and a mounting protrusion (1.2) in the lower part in which the connecting apparatuses are connected by means of bolts/nuts (16) and Y connection element (6), top connection element (7), outer slider connection element (8) produced in accordance with the main profile (1).
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