Windows Schüco – Corona CT 70 CLASSIC


CT-70-CLASSICCLASSIC Window Systems – simple and elegant windows for each building


Basic energy-saving features of CLASSIC Windows:


  • Profile depth for the frame and for the wing = 70 mm
  • only a narrow fragment of the frame is visible in standard profile combinations frame/casement 120mm
  • classic casement design
  • the use of retro beads and aluminium covers allow for a wide range of possibilities for this system in antique or listed buildings
  • aluminium covers on the frame and the wing allow for a wide variety of colours
  • 5- chamber casement profile with good heat-insulating qualities and rigid construction at an attractive price
  • ROTO NT fittings as standard
  • Modern grey seals made of EPDM in white profiles and black seals in profiles with veneer
  • depending on profile combination and glazing type, it is possible to obtain a heat transmission coefficient for the entire window Uw at the level of approx. 1.2 W/(m2K) for a complex window with the standard glass pane (heat transmission coefficient Ug=1.0 W/(m2K).


Two examples are provided below:


  • for a single window 1200 x 1500 it is possible to obtain Uw = 1,35 W/(m2K)
  • for a sliding door 3600×2200 we can achieve 1,26 W/(m2K)
  • depending on profile combination and the glazing type, one can obtain a noise suppression coefficient Rw for the entire window at the level of over 40 dB.


Please note that the window panes are the key factor affecting heat-saving parameters, therefore the use of triple-glazing for the Classic system assure approximately the same parameters as for CT70 CAVA windows. However, we recommend CT70 CAVA or SI82 RONDO / SI82 CLASSIC windows for triple-glazing.