No.1 Tilted Bolts
“PORTA NOVA introduces its latest innovation in way of locking. For highest level of security, we use a patented method of locking by having tilted bolts entering the frame. This brings a real breakthrough in the fields of security doors. Tilted bolts we use for all doors in Class 2, Class 3 and Class 4 certified by Institute of Giordano, Italy.
Number of patents: O.B.I 6003241”