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Projects - Fortitude


Fortitude Series: an embodiment of strength and sustainability. With its impressive 86 mm depth and six-chamber profile, this series is engineered for unparalleled robustness, security, and longevity.

Crafted with RAU-FIPRO and RAU-PVC, which are cadmium-free, and reinforced with aluminum, it offers a shield against environmental challenges and potential threats.

Fortitude is a statement of style, available in a spectrum of colors to complement any aesthetic without compromising on luxury. Its superior design significantly mitigates cold and noise, creating a sanctuary of comfort. With additional insulation, The series is a leader in energy efficiency. Perfect for those who seek excellence in every aspect of their living space.

Unmatched Protection

Resistance to environmental and security challenges.

Advanced Thermal Efficiency

Optimal insulation for energy savings.

Noise Isolation

Superior sound insulation for peace and quiet.

Longevity and Aesthetics

Durable construction with aesthetic versatility.


Technical Specifications


RAU-FIPRO, RAU-PVC, cadmium-free

System Depth

86 mm

Number of Chambers


Overlap of Seals in Rebate

5 mm (outside), 4 mm (inside)

Distance to Hardware Groove Axis

13 mm

Maximum Filling Thickness

53 mm

Opaque Part Size

107 mm to 179 mm (169 mm to 192 mm)

Thermal Resistance

0.84 to 1.1 W/m²K

Wind Load Resistance

Up to class C5/B5

Water Tightness

Up to class E 900

Air Permeability

Up to class 4

Sound Insulation

Up to Rw,P = 47 dB

Burglar Resistance

Up to WK 3

Color Solutions

Lamination and varnishing

Rebate Gap

5 mm (outside), 4 mm (inside)

Color Options

A circle of stars on a black background, representing the beauty and mystery of the night sky.

If you are interested in our products and would like to place an order or if you have any questions, please contact us.

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