The tilted opening with Roto NT hardware at two levels allows for a healthy micro ventilation of the rooms without any heat loss.
The Roto NT hardware, thanks to the special anti-corrosion treatment of the "Rotosil Nano" surface, ensures durability and resistance, without any rust forming.
The handle with Secustik lock, the mushroom safety latch, the overlap between the frame and sash, are all elements of Roto NT hardware that guarantee our products in anti-intrusion and protect you and your family from unwanted guests.