windoors sarl


IDEAL 4000


70 mm construction depth

With millions of units already installed, this system impresses with incredible, tried-and-tested stability and a wide range of designs. 



      70 mm                   1.3 W/m²K        0.76 W/m²K       Up to RC2           Up to 45db


construction depth        Uf value          Best Uw value        Safety          Sound insulation


Your advantages

  • thermal insulation value of the standard combinations Uf = 1.3 W/mK
  • glazing thickness up to 41 mm
  • outstanding sound insulation up to sound transmission class IV (45 dB)
  • double design variety in the sash (recessed | semi-recessed)
  • different profile shapes for an individual design
  • design glazing bead for the inside
  • concealed drainage is possible
  • 5-chamber profile in the standard combination
  • circumferential backstop gasket in the frame and sash
  • special security hardware guarantees the highest level of burglary protection.
  • backstop gasket system available in countless decor finishes


Window terminology

What is the U value?

The U value, that is the thermal insulation measure, plays an increasingly important role. The U value (heat transfer coefficient) describes how much thermal energy is transported through a building component with the size of 1 square metre. 

To put it in simple terms: 

The lower the U value, the better the insulation qualities of the window. 

Ug = thermal insulation value of the glazing 

Uf = thermal insulation value of the window frame 

Uw = total thermal insulation value of the window

 Windows made by our aluplast partners meet or exceed current and future energy efficiency guidelines as the German Energy Saving Ordinance (EnEV). You will never have to worry about saving energy!Get informed right now and consult your local aluplast partner.

Terminology of window types 

With aluplast PVC window profiles the most diverse window types can be manufactured, for example single-sash or multi-sash windows, sliding windows, sliding doors and many more.

 For the optimal use of the available space and in order to ensure adequate ventilation, the way of opening plays a crucial role. And, of course, the window type should also suit the building`s architecture. 


Ideal 5000

IDEAL 5000®

70 mm construction depth

The safe renovation system with added burglary protection: safetec inside is the smart way to prevent break-ins. 


Technical details

    • 70 mm construction depth
    • Uf=1.2 W/m²K
    • Uw=0.96 W/m²K with standard-triple-glazing with Ug=0.7 and Psi=0.040 W/mK
    • Uw=0.73 W/m²K best possible option with triple glazing with Ug=0.4 and Psi=0.030 W/mK
    • safetec inside (central profile wall system)
    • Up to RC3 burglary protection
    • Up to 47 dB sound insulation (sound insulation class 5)
    • Up to 41 mm glazing 
    • Many decor variations available
    • Available with aluskin®  aluminium shells (wide array of colours)
    • Recessed version, semi-recessed version
    • 5-chamber-profile
    • Concealed drainage is possible
    • Optional bonding inside (adhesive technology)