Class 5 EN 1670 Giesse products

Designing hardware that does not need to be replaced during the entire life cycle of the window is one of the key principles of eco-design, as indicated by the European ESPR directive. (Ecodesign for Sustainable Products Regulation), which recognises durability as a key component in reducing environmental impact, resource consumption and maintenance.

Class 5 represents the maximum level of corrosion resistance (on a scale of 1 to 5) for window and door hardware, according to European standard EN 1670. Products that achieve this level guarantee consistent performance and extreme longevity even in the most severe environmental conditions — seaside locations, tropical climates, areas with high pollution levels.

ShieldMax5, corrosion proof surface treatment

The exclusive ShieldMax5 surface treatment enables Giesse solutions, such as C.H.I.C. concealed window hinges, to achieve and exceed Class 5.

Beyond Class 5

Giesse is constantly committed not only to complying with the main international quality standards, but also to challenging and exceeding them. The EN 1670 standard certifies products that achieve 480 hours in salt spray without oxidation, damage or reduction in performance. However, as there is no certification beyond this threshold, some products that actually exceed it do not have an official measure of their durability, as the test stops just beyond the threshold.

The Giesse laboratory has carried out internal tests under the same conditions as the standard and, for example, in a series of internal tests, the C.H.I.C. 100 concealed hinges, thanks to the ShieldMax5 treatment, achieved an exceptional milestone: over 1000 hours of resistance in salt spray, more than double the maximum level.

Discover the C.H.I.C. range for windows. All products are certified Class 5 EN 1670:

Outstanding materials

Giesse Research and Development is increasingly focusing on solutions that incorporate materials with high corrosion resistance, such as stainless steel, right from the design stage. This choice is in line with the philosophy behind the ShieldMax5 treatment: more durable materials significantly increase the longevity of hardware and, consequently, of windows and doors, reducing the overall environmental impact throughout the product life cycle.

In addition, some countries around the world, such as Israel, are introducing increasingly stringent regulations to prevent corrosion in building materials. In many areas subject to a marine climate or high salinity, national regulations require advanced resistance tests to ensure durability and safety, usually based on recognised standards such as EN 1670 or the ASTM B117 American standard.

Champion Plus Stainless steel

Within its range of multi-locking rods, Giesse launched at the end of 2025 the AISI 304 stainless steel version of Champion Plus, the ideal solution for multi-point locking of sliding systems for 45° cut profiles.

Giesse handles

Giesse powder-coated window handles and cremones achieve or exceed 480 hours in salt spray testing.

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