minimal windows®        
        ...MAXIMUM VIEW!


Keller’s minimal windows® frameless design sliding windows captivate by their slender profile geometry and flush-fitted installation to floor, ceiling and walls. The minimalistic design of the large fixed and sliding windows creates large, light-flooded living spaces.


The sliding rail integrated in the floor provides for a transition without a threshold. The level installation makes for a seamless transition from indoors to outdoors. Glass walls from the floor to the ceiling can be comfortably opened and closed.


The modular premium system offers individual design freedom to architects, planners and owners. Unlimited combinations of sliding, pivoting and fixed leaf elements are possible, as are solutions without corner posts and sliding elements into wall pockets.

Energy efficient

minimal windows® sliding leaves achieve a first-class energy balance in conjunction with extraordinary aesthetics of refined aluminium resulting in an elegant look. The highly insulated premium version of the system offers top thermal values at passive house level.


Optionally available powerful electric motors move the sliding leaf without a sound. Various controllers can be used as well as electrical locks and magnetic contacts for monitoring the closing function.


  • RC2 (WK2) burglar resistance
  • Sound insulation up to 43dB.
  • Design without corner posts.
  • Unparalleled high performances with respect to wind load, driving rain tightness and air permeability.
  • Suitable for blower door tests

Choose your language: