Decalu Entra aluminium windows with 73 mm installation depth

Decalu Entra is an affordable aluminium window system from the Decalu range, designed to let in as much light as possible. RS Concept, a Polish window and door supplier, quotes Entra windows to your sizes for a wide range of building projects. There are three design lines: Standard, Steel and Steel Flat, the last two with the look of steel windows. The installation depth is 73 mm, and three thermal versions are available: Standard, HI and HI+. Windows can be up to 2800 mm high and still look light. The frame and sash can be flush on the outside and, optionally, on the inside.

Send us drawings or a window schedule for a quote. Lead time from 1 month, confirmed with the quotation.

Key features


  • Aluminium window system, installation depth 73 mm
  • Three design lines: Standard, Steel, Steel Flat
  • Three thermal versions: Standard, HI, HI+
  • Glazing packages 8-63 mm (windows) / 5-47 mm (fixed)
  • Windows up to 2800 mm high
  • Thermal break of glass-fibre reinforced polyamide, 34 mm wide
  • Frame and sash flush on the outside and, optionally, on the inside (Inline Frame)
  • Bicolour option available
  • Full RAL K7 colour palette; other colours on request (powder code)


Available on request

  • Sizes and opening types to your window schedule or drawings
  • Glazing units within the thickness range above (double or triple)
  • Design line (Standard, Steel, Steel Flat), thermal version (Standard, HI, HI+), bicolour finish
  • Colours: full RAL K7 palette; other colours via powder code
  • Technical data and profile drawings for your project

Lead time

From 1 month, confirmed with each quotation.