Frameless insulated sliding windows

 
Sky-Frame is a unique system for large-surface sliding windows whose surrounding frame can be installed flush with walls, ceilings and floors - the only visible part of the frame is a 20 mm thin vertical muntin where two elements overlap. This allows for unrestricted views and sill-less floor transitions from indoors to the outside. In addition to these aesthetic advantages the system also fulfils the highest requirements with regard to heat insulation and safety. This window is very disabled-friendly thanks to concealed rails.
Swiss made. Patented.
 

Kunz Peter Architecture, Winterthur