Key facts

OS2 75
Secco Sistemi >
Architonic ID:
Manufacturer groups :
Doors-Patio doors >
Windows-Window types >
Doors-Patio doors >
Windows-Window types >

Product description

OS2 75 is part of the group of OS2 systems studied, conceived and realized by Secco Sistemi to replace the doors and windows used from the nineteenth century up to the middle of the last century.
This thermal break steel window comes in an array of more than 40 profiles, with visible sections reduced to the minimum: from just 27 mm to 62 mm and 77 mm depth. The endless variations of OS2 75 correspond to the needs of an architectural project which designs the window in every single detail, calibrating the borders with care to vary harmoniously the play of light and shadow on the façades, both interior and exterior. OS2 75 offers the possibility to realize different types of opening that can be freely composed in endless combinations in the glass curtain walls: the tilt & turn sash comes in dimensions of up to 130 x 290 cm with glazing panels of up to 50 mm, with concealed hinges and break-in-resistant closing mechanisms. Pivoting and hinged fixtures increase interior space with sashes of up to 100 x 290 cm, with reduced dimensions and thin, congruent section profiles. The sliding hinges, bottom and top rails are concealed when the doors are shut. The performance of the OS2 75 thermal break system has been tested by the best European certifying laboratories in compliance with the current specific standard EN 14351-1 regulations.

Product family


OS2 family systems are characterised by an elegant solution for the relationship between the transparency of the glass and the lightness of solid precious metal frames; for efficiency, versatility and beauty of doors and windows; for the merging of technological innovation and detailed craftsmanship. Awarded the Compasso d’Oro 2018, OS2 represents the synthesis of the mature experience acquired by Secco Sistemi during the course of decades of research and business vocation directed towards continuously exceeding its own goals.