GG ST BT 50 / BT 60

All-glass, un-insulated system with high transparency standard. This is achieved by frameless, point-supported glass louvres. The flush appearance of the system is achieved by the stepped overlapping of the horizontal glass edges.


  • Frame made from non-insulated, extruded aluminium profiles
  • Overall frame depth 50 / 60 mm
  • Blade made from point-fixed all-glass panes
  • Panes stepped (rebated) at horizontal edges
  • Optional EuroLam clamping profile