Quality windows and doors

The production of Rationel doors and windows features systematic quality checks throughout the production process, in order to distribute only quality products.

Danish Window Verification

All Rationel's products are DVV-certified. This means that as a minimum windows and doors meet the requirements defined in VinduesIndustrien's (The Association of Danish Window Manufacturers) technical regulations, regarding both products and production. DVV esures that all members follows the adopted quality norms and they undertake factory visits continuously. DVV is previously known as DVC.

DS/EN ISO 9001:2000

Rationel's management system meets the criteria in ISO 9001.

Indoor climate labelling

Rationel Windows A/S has the Danish Indoor Climate label. This guarantees that Rationel products do not pollute the atmosphere with toxic gasses when installed in buildings.

CE-label

Rationel's products are tested and approved according to the official CE-mark.

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