Distinct Architectural Appeal

One of the earliest forms of windows, the casement has been around for centuries. Many historic buildings throughout Europe – some dating as far back as the 16th century – retain some form of their original casement windows. So, as it's often said, why reinvent the wheel?

REHAU has taken a tried and true window concept and evolved it into an elegant, high-performance design preferred by discerning homeowners, designers and architects in residential markets across the world. And while the casement may retain a distinctly European influence, this style window has in fact seen a sharp upward trend in residential installations across Asia in recent years.


Product Description

Windows made out of REHAU Prestige-Design S921 are ideal for the requirements of all projects. The 60mm system with 3 chambers offers reliable solutions for windows, which are economical and efficient.

Two sealing protect against dust, wind and rain. The smooth surface and the design of the profiles are ideal for fuss-free maintenance.

A wide range of lamination and co-extruded surfaces fulfill the need for all kinds of colors.

*REHAU window designs are supplied through a network of selected independent fabricators and installers.  ISOTOP ensures that you get the services and expertise of a certified local company backed by the resources of a global company.



Construction Dept:



3 Chambers

Thermal Insulation:

Uf = 1.6W/m2K


Sound Insulation:

Up to 40dB


Air Tightness:

Class 4

Water Tightness:

Class 9 A / E 750

Glazing Capacity:

3mm ~ 36mm

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