Alu-One 125 SD

Alu-One 125 SD sliding door design is an impressive option for creating unique and inspiring living spaces. In contrast to conventional sliding doors, this specially engineered door system can be built to fill significantly large openings while offering an almost effortless sash operation and instant architectural appeal. Superior sealing properties provide outstanding performance and comfort.

The design of Alu-One 125 SD offers versatility and it is ideal in meeting requirements for renovation and new construction applications in residential and commercial buildings.

The system has an optimized frame to sash overlap that ensures tight clasp improving energy saving and avoiding water and dust penetration. Added benefits include outstanding energy efficiency and sound reduction.​


  • The sliding sash to run internally or externally of the fixed lights
  • Two or three rail design
  • Anti lift mechanisms for increased security
  • Glazing: 6 mm to 38 mm triple glazed units
  • Available in single and dual colour powder coat, or  anodised finish
  • Manufactured under ISO9001 quality management system
  • CE marked


Frame depth: 138/208 mm
Sash depth: 58 mm
Minimum visible width: 113 mm
Glass thickness: 6-38 mm
Gaskets: EPDM
Type of insulation: simple poliamide strip
Insulation depth: 24/45 mm


Thermal insulation EN ISO 10077-2: 1.8 W/m2K (double glazed window)
Thermal insulation EN ISO 10077-2: 1.5 W/m2K (triple glazed window)


Brochure information about current system
Technical catalog short version of fabrication manual