MB-77HS Lift-Sliding Doors

Energy-efficient lift-sliding terrace doors with excellent thermal insulation

MB-77HS is an Aluprof lift-sliding door system designed for terraces and balconies, offering excellent thermal insulation with a heat transfer coefficient of 0.84 W/(m²K). The system is available in two versions — ST and HI — with different thermal insulation levels and meets the highest standards for air tightness (Class 4), water tightness (Class 9A), and wind resistance (Class C4). The slim profile and large glazed area provide excellent natural light penetration, while the barrier-free (zero) threshold guarantees comfortable transition to outdoor spaces. The doors can be automated with the hidden "HS e-Power" motor featuring obstacle detection and are ideal for smart home concepts. The system is fully compatible with other Aluprof systems, including MB-86, and allows the creation of large structures exceeding 3 m in height with double or triple glazing.