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    Decalu 88 Hidden

    For whom?

    A window system characterized by a hidden sash. It provides very good thermal and acoustic insulation, while maintaining an extremely original appearance.

    Constructional features

    a system with a concealed wing,
    Installation depth 88 mm,
    two gaskets,
    gaskets integrated into profiles,
    Uw = 0.9 W/m2K (with a two-chamber package),
    Uf from 0.81 W/m2K,
    maximum glazing thickness 71 mm,
    the standard glazing package is 4th/16/4/16/4th*.
    mobile post with a minimum width of 111.5 mm,
    high watertightness parameters - 2400 Pa,
    dehydration down the frame,
    invisible drainage of the horizontal post,
    Patented drainage groove protection,
    invisible line of gaskets,
    system parameters confirmed by a certificate from the Building Research Institute.

    DECALU 88 HIDDEN - the so-called "hidden wing" system contains all the features of the basic DECALU 88 STANDARD solution, and at the same time provides optimal visuals for this type of solutions. An additional advantage of the DECALU 88 HIDDEN system is the possibility to glaze all glass thicknesses with glazing clips used in the basic version without the need to change the sash profiles. The movable post for "hidden wing" solutions in the minimum version has a visual width of 111 mm. In the system, fixed post solutions will be available for the following units: wing-sash, wing-sash - permanent glazing, permanent glazing - permanent glazing.


    A system using patented solutions with the so-called "hidden wing". The sash - fixed, sash - sash, fixed-glazing units are designed in the same external plane, i.e. fixed and openable (with sash) units in this solution have the same appearance.

    The appearance of windows based on the Decalu 88 Hidden system is appreciated by architects. It looks particularly good in office buildings, but it will also work well in residential buildings.

    In traditional systems, visually visible and widening window sashes often interfere with the elevation divided by vertical and horizontal lines of profiles, which is why in such cases the so-called hidden sashes are used. Decalu 88 Hidden windows look very interesting in buildings with external vertical and horizontal rustications or mounted in rectangular or square, external prefabricated panels.

    The movable post for Decalu 88 Hidden solutions in the minimum version has a width of 111.5mm and a frame height of 83mm (for permanent glazing or openable quarters). The depth of the system is 88mm.


    What distinguishes the windows based on the Decalu 88 Hidden system from others is undoubtedly an extremely aesthetic appearance. Both from the outside and after opening the sash, the window looks very good. All gaskets in the windows are flat and practically invisible. Moreover, the system manufacturer has obtained the lowest frame and sash assembly on the market - only 83 mm. The smallest width of the movable centre post was also obtained - 111.5 mm.

    What does this mean?

    First of all, the fact that the window has a larger glazed area, and thus better illuminates the rooms.

    The aesthetics of the window are also enhanced by hidden hinges. The application of this solution allowed not only to get rid of unnecessary, visible elements, but also to maintain the continuity of the gaskets, and thus the tightness of the window. The only visible element of the window fitting is the handle, which can be painted in the colour of the window. All details such as the shape and appearance of the drainage cap, the colour of the fittings, the visual flatness of the gaskets have been taken care of here.

    In order to give an individual and even more interesting look to the woodwork, it is worth considering the choice of its colour. The windows in the Decalu 88 Hidden system are available in the entire RAL palette and wood-like colours. We also offer anodized joinery.


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