The MB-59S CASEMENT system is intended for production of tilt windows and windows opening outwards – the economical ones and possessing good functional qualities at the same time. This type of windows is intended to be mounted both in wall openings and in mullion-transom facades. The construction is based on the window/door system with a MB-59S thermal break. The structural depth of the window sections is equal to 50 mm for frames and 59 mm for casements. The profiled omega-shaped thermal breaks of the width of 16 mm and 22 mm, made from polyamide reinforced with fibreglass are applied.