Windows of that type are designed to both be built into openings in the walling and to be fixed in the mullion-transom façade. The construction is based on the window-door system with the MB-59S thermal spacer. The depth of frame profiles is 50 mm, for a sash is 59 mm. Profiled thermal spacers of the “omega” type of 16 and 22 mm width, made from polyamide reinforced with glass fiber are used in them.

Outward openable windows can be equipped with two types of hinges: butt hinges or friction hinges. The MB-59S CASEMENT system profiles have profiled grooves with such dimensions which allow enclosing furniture and connecting elements to be used in accordance with the EURO standard. Furniture of renown firms, such as: Sobinco, Securistyle is installed in them.

The system enables to use glazing units with thickness from 4,5 mm to 40,5 mm in window sashes and from 4,5mm to 31,5 mm in fixed windows. Constructions made of this system are characterized by high esthetics and good applied parameters:

-inner surfaces of a frame and a sash are in one plane,

-glazing gaskets are hardly visible from outside,

-gaskets are mounted in a continuous way, without trimming in the corners, what significantly shortens assembly time and improves leak tightness,

-each window construction has an effective system of water drainage and ventilation from the glass chamber between the sash and frame.