Sonarol MB-77HS Aluminum Patio Door System

Sonarol MB-77HS Aluminum Lift-and-Slide Patio Door System

The Sonarol MB-77HS Aluminum Patio Door System is an aluminum lift-and-slide design for connecting interior rooms with patios, balconies and gardens. The aluminum frame uses a 174 mm profile with two running rails or a 271 mm profile with three rails, while the moving sash profile is 77 mm deep. That frame choice organizes how the fixed and moving panels occupy the opening, and the system accepts infill from 13.5 to 58.5 mm, including double- and triple-glazed units. Sonarol describes a low threshold for passage and profile sight lines that keep the door defined by its aluminum frame and glass. The sash lifts onto the running gear to move along the rail rather than swinging into the room, allowing the door to open without taking up the same interior floor space as a hinged leaf. A published reference allows sash dimensions up to 3.2 m high and 3.3 m wide, with a maximum sash weight of 400 kg. These figures refer to the system sash envelope; the actual opening is established by the complete door design. Manufacturer system and reference data depend on selected rail count, glazing, hardware and finished door configuration.

Rail layouts, glazing and easy passage

MB-77HS turns a wide patio opening into a guided sliding movement: lifting hardware raises the sash clear for travel, and the running rail supports its passage alongside the fixed panel. The frame can be planned with two or three rails, a choice that changes how the panels are arranged across the opening. A two-rail frame provides a paired track layout, while the three-rail option adds another route for arranging moving and fixed sections. The system’s 77 mm sash profile and 13.5–58.5 mm infill range define the moving leaf, with room for different compatible glass-unit constructions. At the lower edge, the low-threshold design supports a more direct route between a room and an outdoor surface. Aluprof describes glazing bead finishes in square, rounded and profiled forms, offering distinct ways to finish the perimeter of the glass. Sonarol also identifies ST and HI versions within the MB-77HS system family; these are profile construction options. Its published 400 kg sash limit and reference dimensions help describe the scale of door leaf the system addresses, while the rail count, glass and hardware shape the finished assembly. Sonarol also describes purpose-shaped weatherstrips and glazing gaskets used with suitable locking fixtures, bringing the frame, glass edge and closure hardware into one coordinated system. For a patio or garden frontage, the sliding format keeps the movement aligned with the opening and lets the glazed panels remain part of the façade when the door is closed.

Sonarol MB-77HS system specifications