Alu-One 40 SL

Slim Line 40 is a highly insulated system inward and outward opening windows and doors, which combines elegance and comfort, with a unique design. This special slender steel look is the perfect solution for modern architecture and renovation of steel-framed windows, respecting the original design but offering a thermally improved solution.

The SL 40 system is available with different minimalistic design to perfectly match the architectural aspect of the building. The windows and doors can be provided with double and triple glazing without losing the ultra-slim look.

In combination with its superior insulation capabilities, the system provides the perfect harmony between durable material, clean design and demanding architectural challenges.

Alu-One™ 40 SL can accommodate the following opening types:

  • Open in and open out doors
  • Open in and out casements including Tilt & Turn


  • Three chambered system
  • High performance EPDM gaskets
  • Glazing: up to 55 mm triple glazed units
  • U-values as low as 1.4 W/m2K
  • Euro Hardware compatible  profiles
  • Can be used on projects where Lifetime Homes is specified
  • Available in single and dual colour powder coat, or  anodised finish
  • Manufactured under ISO9001 quality management system
  • CE marked

Caracteristici tehnice

Frame depth: 76/99 mm
Sash depth: 72/75/86 mm
Minimum visible width: 72 mm
Glass thickness: up to 55 mm
Gaskets: EPDM
Type of insulation: simple poliamide strip
Insulation depth: 32/40 mm


Thermal insulation EN ISO 10077-2: 1.4 W/m2K (double glazed window)
Thermal insulation EN ISO 10077-2: 1.2 W/m2K (triple glazed window)


Brochure information about current system