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General information

Schüco CORONA CT 70 – the most versatile window system

CT 70 AS is a 5-chamber plastic profile system with rebate gasket. The system boasts very good thermal insulation properties and narrow face widths. The sealing system with two rebate gaskets and deep glazing reduce energy consumption. Two drainage levels and the use of an appropriate glazing unit guarantee optimum protection against wind, rain and noise. Narrow visible window profile widths ensure maximum light penetration. The system has robust steel profiles in the frame and sash for stability. The offer includes a large selection of foils and the option to use coated or anodised cover caps.

  • Wall thicknesses according to RAL-GZ/ 716 and DIN EN 12608 Class A and B
  • Plastic window system with RAL certification
  • 8 mm sash rebate for high reliability
  • A 5 mm wide gasket groove between the frame and the sash ensures a large tolerance range
  • Perfectly-sized reinforcement chambers meet the highest structural requirements
  • Glazing bead height up to 23 mm for deeper glazing installation
  • Leaf-embedded EPDM gaskets return to their original shape very well and are permanently flexible
  • Innovative gasket geometries with wide contact surfaces ensure excellent groove weathertightness
  • Corona CT 70 AS windows are captivating thanks to their timelessness and sleek profile design
  • The system offers two leaf contours (Classic, Rondo) and a wide range of single colours as well as colour imitating wood
  • The Corona CT 70 TopAlu provides exceptional design options thanks to durable cover caps that may be coated or anodised to any RAL colour.

Technical data

Installation depth 70 mm

  • 5 thermoinsulating chambers
  • Glazing unit thickness up to 40 mm
  • Acoustic insulation up to 46 dB
  • Profile thermal insulation Uf = 1.2 – 1.5 W/(m2K)


  • Burglar resistance up to RC2