Frequently asked questions

Can I install European windows “the American way”?

Yes. At Fenster & Frame, we offer European windows and doors designed for American installation methods. Many of our systems are available with nailing fins, allowing your contractor to install them just like traditional U.S. windows—without losing the energy performance, tight seals, or modern design that make European products exceptional.

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How are European windows installed in the U.S.?

When you order through Fenster & Frame, you don’t have to worry about complex installation. We provide step-by-step installation instructions, technical support, and even connect you with builders and homeowners in the U.S. who have successfully installed our European window systems.
For maximum convenience, we recommend choosing configurations with nailing fins, which simplify installation and meet familiar American framing practices.

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Are European windows certified for use in the United States?

Yes. Our products meet NFRC (National Fenestration Rating Council) standards for thermal performance, air infiltration, and structural integrity. European windows are globally recognized for their superior efficiency, and we ensure that all systems we import are engineered for U.S. code compliance.
Because requirements vary by state and climate zone, our team will confirm that your selected products meet local standards before purchase.

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What happens if there are issues during installation?

Correct installation is essential for both performance and warranty coverage. Our team will guide your installer with technical documents, videos, and expert support, helping ensure the job is done right the first time. While final installation remains your contractor’s responsibility, we’re here every step of the way to help troubleshoot and advise.

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Will my quote and drawings use U.S. measurements?

Yes. While our products are built to European precision standards (metric system), Fenster & Frame provides quotes, shop drawings, and specifications in imperial (U.S.) units for your convenience. You’ll have everything your builder needs in the format they expect.

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Are European windows suitable for hurricane-prone regions?

Absolutely. We offer high-performance systems with exceptional wind and water resistance, including models tested for hurricane conditions. Our experts will help you choose the right system for your project based on regional exposure, pressure ratings, and local building codes.

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Can European electronic drives and accessories work with U.S. voltage?

Yes. Many of our systems, including motorized sliding doors, blinds, and smart-lock wiring, can be adapted to standard U.S. voltage (110V). We’ll ensure any selected components are properly configured before delivery.

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Can I customize hardware or add features like turn restrictors?

Of course. We can integrate turn restrictors, thumb-turn inserts, or key-only entries upon request. These options allow you to tailor the operation, function, and security of your windows and doors to fit your home’s needs.

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How do I convert European Uw values to U.S. U-Factors?

To compare European and U.S. efficiency ratings, simply divide the European Uw value by 5.678.
Example: Uw = 1.2 → U-Factor = 0.21 (1.2 ÷ 5.678 = 0.21).
We also provide a quick conversion tool and educational resources to help you understand energy performance metrics for European windows in American homes.