heroal S 77 SL

Innovative lifting-sliding door for large-scale transparency

The aluminium lifting-sliding system heroal S 77 SL is an innovative, design-oriented lifting-sliding door for patios, balconies or conservatories. heroal S 77 SL combines large, frameless fixed glazings with moveable monorail sashes, and serves as an almost invisible link between indoors and outdoors. At the same time, this lifting-sliding door offers best insulation values. Additional highlights connecting the interior with the exterior are a corner designed with fixed glazings, and a corner solution that can be opened – both create a unique living experience. With perfect insulation values (Uw ≥ 0.86 W/m2K) and certified burglary resistance (resistance class RC2), heroal S 77 SL is a high-end, aesthetically appealing and at the same time functional system. As all sliding and lifting-sliding doors by heroal, heroal S 77 SL is also available as a barrier-free version.

  • Frameless glazing of the fixed element
  • All-glass corners, opening or fixed
  • Burglary resistance up to RC 2

System dimensions

Visible profile width [mm]

Leaf profile

System properties

Glass filling strength [mm]
Max. leaf weight [kg]
300 - 400
Max. leaf heights [mm]

Performance characteristics

> 2,1 Thermal insulation [Uf in W/m2K] / Profile width [mm]
4 Air permeability
> 0,86 Heat insulation (Uw in W/m2K) / Profile width [mm]
9A Resistance to driving rain
C3/B3 Wind resistance
1 - 3 Soundproofing class
RC 2 Resistance to burglary
1 Operating forces


The heroal promise

When it comes to how we live and work, the most important thing is having choices. heroal knows that. As a family-run company with more than 140 years of experience, we believe that when it comes to quality, there are no compromises. That is why our products give you a way to create ideal solutions for nearly any requirement. As a technology leader, we believe that quality means more efficiency, more reliability and more performance – solutions that are "SIMPLY. BETTER."

  • over 3,500 specialist partners worldwide
  • products with tested quality
  • family-run company with a long tradition
  • made in Germany
  • personalised design
  • comprehensive range of services
  • superior technical solutions