Thermal insulation and varied design

Brilliant-Design system from REHAU efficiently combines thermal insulation with design diversity. Regardless whether you choose 70 mm or 80 mm frame depth, it is ideal for both new construction and renovations. You can personalize using many shapes, colors and wing models.


System design depth: 70 mm (optinoal: 80 mm frame profile) / contact gasket

Number of chambers: 5

Thermal insulation:
Uf = 1.3 W/m²K (Brillant-Design with standard reinforcement) Uf = 1.2 W/m²K (Brillant-Design plus reinforcement with thermal barrier)

Energy savings: up to 56% (base of comparison: old wooden windows / PVC Uw = 2.7 W/m²K)

Soundproofing: up to RwP = 45 dB

Burglar protection: up to class 3 strength (WK3) (ENV 1627)

Air permeability: 4 (EN 12207)

Water tightness (heavy rainfall): E900 (EN 12208)


Tilted furrow inside the frame for better drainage and easy cleaning

Optimal static characteristics through high depth reinforcements

Same fittings for frames and wings for optimum inventory

Optional weldable seals for economic production

HDF (High-Definition finishing) surface is high quality, extremely smooth and durable, easy to clean

Environmentally friendly, recyclable


Leaf with beveled or rounded design

Multiple configuration possibilities through colored decorative foils as well as painting or decorative aluminum caps

Many architectural possibilities through individual shapes such as round windows, irregular or inclined windows or divided by mullions

The following accessories and additional products are available for Brillant Design system:

Solution for corners without condensation:

Effective mold and condensation prevention (DIN 4108-2). Build options for 90⁰ corners and variable angle corners between 90⁰ and 180⁰.

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Brillant building systems design

Choose for your home.