What is the difference between sliding window systems: HST, PSK and SMART-SLIDE?

The main differences between PSK, HST and SMART-SLIDE are:

  • Opening method:
    • HST: the window rises a few millimeters and moves
    • PSK: the window opens and moves, hiding behind the fixed sash
    • SMART-SLIDE: the window opens and moves, hiding it behind the fixed sash
  • Threshold height:
    • HST: thresholdless
    • PSK: has a threshold (the height depends on the profile)
    • SMART-SLIDE: has a threshold
  • Size:
    • HST: large
    • PSK: average
    • SMART-SLIDE: medium
 HSTPSKSMART-SLIDE
Lift-slide opening✔  
Tilt and slide opening ✔✔
Low Threshold✔  
ProfilesHST 85 mm

VekaSlide 82
Ideal 4000 7000 8000SMART-SLIDE, SMOOVIO