Concept System 24 'Steel Look' door

Ultimate elegance

Concept System® 24-SL includes thermally insulated outward opening window doors, with an ultra-slim design to give a steel look & feel. As such, CS 24-SL doors are the perfect solution for new-build constructions and replacement of steel-framed doors, respecting the original design but offering a thermally improved solution. 

The CS 24-SL doors are available in single entrance doors, with reduced threshold, perfectly matching the CS 24-SL window system. With regard to security, CS 24-SL door can comply with the burglar resistance class 2, offering a safe and secure solution. This in combination with the excellent insulation level makes CS 24-SL not only suitable for new-build houses, but also for renovations of steel-framed windows, residential constructions, schools and utility buildings. 

The standard outward opening types can be applied in numerous combinations in line with the needs of the building. The window system perfectly matches the CS 24-SL door system. A unique aspect is that this slim system can also comply with burglar resistance class 2, offering a safe and secure solution. 


CAD drawings

The Architect Catalogue (PDF) contains information and filenames of the individual CAD files. Please consult this document to find the required CAD files for every section.

Technical information


Min. Visible width frame: inward opening- mm 
Min. Visible width vent: inward opening- mm 
Min. Visible width frame-vent: inward opening- mm 
Min. Visible width frame: outward opening19 mm 
Min. Visible width vent: outward opening84 mm 
Min. Visible width frame-vent: outward opening103 mm 
Min. Visible width T-profile13,9 mm 
Max. height vent2400 mm 
Max. width vent1100 mm 
Max. weight vent (element)120 kg 
Overall system depth frame85 mm 
Overall system depth vent85 mm 
Rebate height14 mm 
Min. Glass thickness17 mm 
Max. Glass thickness29 mm 


Air tightness max. test pressure4 (600 Pa)
Water tightness4A (150 Pa)
Wind load resistanceC3 (1200 Pa)
Burglar resistanceWK 2

Opening elements

  • Outward opening single window doorOutward opening single window door

More solutions

Compatible handles