ST4-600 Lift & Slide Door

Our ST4-600 Lift & Slide door exhibits the best thermal insulation in all the sliding range with transmissions of 1.2 Wm2/K.

This maximum energy efficiency is possible thanks to the perfect combination of polyamide thermal breaks and insulating foam combined with the use of high-performance triple glazed units (possible thickness up to 55 mm) and large size sliders.

ST4-600-Lift and Slide - APA Facade Systems

Acoustically this combination of framing and high-performance acoustic glass will deliver a noticeable noise reduction.

The lift and slide mechanism on this door features bogies that allow door to be lifted for ultra smooth slide & lowered for excellent weather seals, reducing air leakage.

The possibility of large sash dimensions makes the ST4-600 system the ideal choice for enclosing large spaces while maintaining a high level of luminosity. It is fabricated with pull handles and finger pulls with a “comfort unit” making it effortless to lift the sash.


The ST4-600 Lift & Slide system is available as a single or dual colour door, with over 200 RAL colours available.

For more information on this thermally enhanced Lift & Slide door get in touch with a member of our team here.


  • Multiple opening possibilities up to 6 sashes
  • Maximum height/weight 3000 mm or 300 kg
  • Frames 160 mm – 3 rails 251 mm.
  • 70 mm sash.
  • Possible glazing thickness up to 55 mm.
  • Polyamide strip 35 mm thick in frame and 24 mm in sash.
  • 2 mm profile thickness
  • Available as single or dual colour
  • Qualicoat powder coating

Uw Whole door value* EN ISO 1077-1 as low as 0.9 W/m2K
Air permeability EN 12207:2000 Class 4
Water tightness EN 12208:2000 Class 9A
Wind resistance EN 12210:2000 Class C5

*Whole door U values are a combination of the frame and glazing thermal performance and as such will vary with the specification of glass utilised. Please consult with the APA technical team for more specific performance information.

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