MB 79N hidden sash

MB-79N hidden sash system – elegant and functional window solution

The MB-79N hidden sash system is an economical and efficient solution designed to meet all technical requirements. It allows for the creation of windows with hidden sashes, offering a seamless, uniform appearance on the building façade, regardless of the window’s function.

Key features:

Invisible sash design: Windows with sashes that are hidden from view, providing a sleek, uniform appearance on the building’s exterior.
Frame versions: Two frame options are available – Type A frame, partially covering the sash, and Type B frame, completely covering the sash to mimic fixed windows.
Flat glass surface: Both opening and fixed windows have external glass surfaces aligned on one plane, enhancing the aesthetic.
Adaptive profile: The system allows the use of frames and battens from the MB-79N base system, offering design flexibility.
Large dimensions and weight: Capable of producing large, heavy windows without compromising performance.
Thermal and acoustic insulation: High thermal insulation and soundproofing properties for greater comfort.
Water and air tightness: Excellent sealing ensures superior protection against external elements.

Benefits of MB-79N hidden sash:

Uniform Aesthetic: The hidden sash design ensures a clean, continuous façade.
Energy Efficient: Meets high standards for thermal and acoustic insulation, reducing energy consumption.
Versatile and Durable: Suitable for large windows and heavy structures, with excellent water and air resistance.

Features and advantages of the MB-79N hidden sash system:

The structural depth of the window sections is: 70 mm (frame), 79 mm (sash).

The profiles have a three-chamber structure.

The central chamber is the insulation between the aluminum sections and is made of shaped thermal breaks 33.5 or 36 mm wide.

The window sash uses an innovative, reinforced, chamber thermal break, very resistant to deflection.

The system enables the production of windows in three variants of thermal insulation, such as MB-79N.The MB-79N hidden sas E version is the most economical solution with a single-component central seal.MB-79N hidden sas ST is a variant with a two-component central seal.

The MB-79N hidden sas SI structure (with the best thermal insulation) is based on profiles equipped with appropriate insulating inserts in the thermal break zone and a two-component central gasket.

The heat transfer coefficients of Uf window frames reach very good values, placing this system among the clear market leaders in this category.

High tightness against water and air infiltration is achieved thanks to the special shapes of the one- or two-component central gasket (with a cellular insulating part) and glazing and cover gaskets.

Closed-shaped glazing beads, both in the Standard and Prestige versions, allow for durable mounting of fillings, which greatly facilitates the creation of anti-burglary structures.

Internal glazing seals are deeply embedded in the glazing beads, so they are hardly visible when viewed from the inside.

The maximum dimensions of window sashes are: Hs max = 2.7 m, Ls max = 1.7 m. Maximum leaf weight – 160 kg.Ranges of glass thicknesses that can be glazed: window frame – from 1.5 to 44.5 mm, window sash – from 12 to 52.5 mm.

A wide range of glazing allows the installation of all types of double-chamber, acoustic and anti-burglary glass available on the market.

The use of typical “Euro” fitting grooves allows the installation of most available fittings for aluminum and plastic windows, including:modern Winkhaus aluPilot hidden fittingsWindows can be equipped with handles with a visible rosette or without a rosette.

The MB-79N US system is compatible with other systems, especially the MB-79N.Thanks to this, many elements can be used in more than one system, e.g. glazing beads, seals, fittings and most accessories.

The MB-79N has been designed to outperform typical thermal insulation requirements. The MB-79 N series can be used to fabricate fixed, side-hung, hopper, tilt-and-turn, and hopper-and-slide windows.

Product	Type	SHGC	U-Factor	VT
MB 79	Dual action (tilt&turn)	0,13 – 0,45	0,20 – 0,32	0,24 – 0,59
MB 79	Awning window	0,11 – 0,36	0,25 – 0,34	0,19 – 0,47
MB 79	Fix	0,15 – 0,51	0,17 – 0,30	0,28 – 0,68
MB 79	Entrace door	0,11 – 0,39	0,31 – 0,41	0,18 – 0,49