The MB-77HSB system was developed for the Belgian market according to the requirements of the Belgian market using the highly valued MB-77HS sliding door system. Appropriate insulation is provided by profiled thermal breaks and additional insulating elements inside aluminium sections.

An important feature of the internal construction of MB-77HSB balcony doors includes a ventilation gap of 2 mm between the insulating insert and the glass package. The gap functions along the entire circumference at the edge of the glass.

The system is suitable for single-family buildings as well as hotels and apartments. Furthermore, the MB-77HSB is ATG certified by the Belgian Research Institute UBAtc.


  • Slim and robust profiles
  • Possibility to build low-floor doors with sash weights up to 300 kg
  • Maximum height 3,2 m
  • Maximum width 3,3 m
  • The system is available with 1-, 2- or 3-rail frames
  • Wide range of fillings
  • Three versions of glazing beads: rectangular - Standard, rounded - Prestige and shaped - Styles
  • Increased anti-burglary properties
  • High water and air tightness
  • Special shaped gasket and glass gasket
  • Safe use with the “HS Speed Limiter”
  • Possibility of installing the “HS-Master” drive
  • Wide range of colours

Technical Information

Air permeability Class 4
Water resistance Class 9A
Wind load Up to class C3
Thermal insulation Uf from 0,88 W/(m2K)
Wind load resistance Up to class C2
Burglary resistance Up to class RC2
Sound insulation Rw (C; Ctr) - dB: 41 (-2 ;-6) dB