Special system for fixing the crosspieces with the uprights using wood dowels called “bironi”. Before the “birone” is inserted, a controlled quuantity of a special water-based glue is squirted into the hole. The “birone” is then inserted at a constant pressure. When the dowels come in contact with the water-based glue they expand inside the hole creating a perfect fixing system that is extremely strong and lasts twice as long as the traditional open tenon system. In addition to greater strength, the advantage of this new technology is the cleanliness of work and the resulting aesthetics of the finished product because the tenon can no longer be seen projecting from the upright.


Dual Dual Slim Oro Diamante Vecchi Tempi Epoca Termik 80 Solid
HFS® (High Fix System)


Protec Protec Planus Royal Everglass Passive Aeneus
HFS® (High Fix System)