Sliding doors.

heroal S 77 SL

The perfect combination of transparency and heat insulation

heroal S 77 SL opens up new large dimensions and guarantees maximum transparency with its unique innovative frame construction.

The new generation of heroal lifting-sliding doors combines a movable monorail casement with fixed frame glazing and minimal view widths. This large frameless glazing with clean lines forms an almost invisible link between the inside and outside, extending the living space beyond its actual limits. The heroal S 77 SL lifting-sliding system is a new architectural design element that creates a new sense of space.

Threshold solution with integrated removal of surface water

Architecturally eye-catching all-glass corner solution

In addition to the classic corner coupling with two lifting-sliding elements, heroal also offers a 90° frame coupling with an all-glass door corner constructed from insulation glass as an additional design variant. The innovative and sophisticated design variant of the heroal S 77 SL lifting-sliding system completely satisfies the increasing demand for more transparency in architecture.

This attractive design variant provides light and vitality and even in the joint area the element frame does not restrict your view. heroal’s elegant detailed solution impresses from both an interior and exterior perspective and creates additional architectural accents.

System properties

Number of profile chambers for casement profile: 3 Heat insulation [W/m²K] Uf* >1,2
Number of high-grade steel runners: 1 Uw** >0,82
Max. number of moveable HS sliding casements: 2 Wind load resistance: C3/B3
Max. casement weights (kg): 300/400 Tightness against driving rain: 9A
Max. casement leaf heights (mm): 3.000 Air permeability: 4


* Uf value according to EN ISO 10077-2: frame combination average
** Uvalue according to DIN EN 12567-1: calculated based on element size 3‘500 x 2‘180 mm

heroal Image source: heroal-Johann Henkenjohann GmbH & Co. KG