If the origin of the word window does not find absolute agreement between linguists and glottologists (from the fanum – Etruscan aedicule – to the fenestra – Latin small door), the version (perhaps apocryphal) that best lends itself to our case is that of finis (border, limit ) and extra (what is outside). An interpretation that can be traced back to the Secco Sistemi production philosophy and can be further declined in finis (purpose, goal) and extra (excellent). Window therefore not so much as a barrier between inside and outside, of which the ever-increasing glass surfaces and mirrors that can be opened become the exact negation, but as an inclusive challenge in terms of spaces and design ambitions.