The MB 79 N SI system features:


  • a 3 7⁄64 in profile for the window and 2 3⁄4 in profile for the window or door jamb,
  • thermal inserts; produced using state-of-the-art technology; they play an important part in attaining the high heat insulation parameters,
  • the MB-79N SI; providing the best thermal insulation. The profiles are fitted with insulating inserts produced using expanded polystyrene (EPS) and a two-component, central gasket,
  • thermal insulation for profiles; Ufvalue from 0.146 Btu (IT)/hour/foot²/°F,
  • compatibility with BERTRAND MB-86 and MB-104 Passive systems, using the same accessories and gaskets,
  • excellent kinematics, making it possible to build narrow, opening windows and doors.



MB 79Dual action (tilt&turn)0,13 – 0,450,20 – 0,320,24 – 0,59
MB 79Awning window0,11 – 0,360,25 – 0,340,19 – 0,47
MB 79Fix0,15 – 0,510,17 – 0,300,28 – 0,68
MB 79Entrace door0,11 – 0,390,31 – 0,410,18 – 0,49


The MB-79N it 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.





Choose a color from our rich palette and shape the windows according to your ideas.