The MB-77HS lift-and-slide door system enables the construction of a wide range of structures designed for comfortable access to the terrace, and its possibilities are gradually developed.

Noteworthy solutions available in the MB-77HS system include

• the new K530075X frame, which is equipped with two thermal breaks and makes it possible to construct an aesthetically pleasing flat threshold, fixed panels glazed from the outside without additional profiles, a narrow 50 mm wide mullion and in-line drainage ;
• the ‘HS e-Power’ drive, concealed in the mullion, for operating leaf weighting up to 400 kg, equipped with an intelligent obstacle detection system and a load switch, allowing the handle to be replaced by a touch-sensitive control panel;
• mounting sections to compensate for ceiling deflection;
• sections for angle connections with windows of the MB-79N, MB-86N and MB-104 Passive systems;
• external railing, designed for ‘G2’ style doors to facilitate opening from the terrace side;
• possibility to integrate the door construction with a screen and a blind.

The construction possibilities of the MB-77HS system have now been supplemented in the catalogue and software with new solutions:

• the new G3 combination, consisting of three panels, in which the central one is the opening leaf which is in line with the fixed leaf. This is an asymmetrical variant in view, but one that has advantages in terms of the layout of isotherms in the structure;
• division of the upper and lower frames independently of each other, which is particularly convenient during the structure preparation and construction phase
• 8A00044X and 8A00045X installation brackets;
• glazing of the fixed panel from the inside with the K(..) 8610 X.

We encourage you to learn about the current possibilities of the MB-77HS system, we are convinced that they make it possible to comply with the requirements of customers and architects in the area of lift-and-slide terrace doors to an ever greater extent. Customers manufacturing doors with the HS e-Power concealed drive are kindly requested to learn about the technical and organisational requirements and the drive distribution scheme, which are attached to the 'GU actuator for the MB-77HS system order form', available in the Authorised Area, as well as to contact Aluprof service centre.