Passion for Creation. The latest technological solutions. Design focused on changing needs. More Features For Windows. The OKNOPLAST philosophy
About company
A world-wide leader in window and door design.
In 2009, after just five years in the European market, OKNOPLAST became a leading manufacturer of uPVC windows. Today, with nearly 3,200 sales outlets across 21 countries in Europe and the Americas, we continue to set the standard for innovation, quality, and design.
Our structured and efficient distribution system has fueled continuous growth, allowing us to bring premium window solutions, including our signature Tilt and Turn windows, to homes and businesses worldwide.
At OKNOPLAST, our mission is clear: to lead the market in every country we serve by delivering cutting-edge products that redefine modern living.
Our story began with a vision
Over 30 years ago in Europe, OKNOPLAST was founded with a bold idea: windows and doors should do more than just separate inside from out—they should shape the way we live. From a small, ambitious workshop to one of the most respected manufacturers in the world, we’ve stayed true to one belief: details make the difference.
Key facts
Since the beginning, the ambition of OKNOPLAST has been to stay ahead of the competition. This goal has become a driving force for innovation within the company. In 31 years, the company has introduced over 60 solutions (most of them patented) permanently changing the market of window & doors products.
People make the difference
Behind every product is a team of passionate experts—engineers, advisors, and partners—committed to your success. We pride ourselves on responsive support, personalized service, and building relationships that last. No call centers, no runaround—just real people who care about your project.
More than a manufacturer. A long-term partner.
Whether you’re an architect, general contractor, or developer, OKNOPLAST is more than a supplier—we’re a strategic ally. With fast quotes, reliable logistics, strong warranties, and dedicated support, we help you stay on schedule, on budget, and ahead of the curve.
HVHZ (High Velocity Hurricane Zone)
Our windows are rigorously tested and certified for hurricane resistance in the HVHZ, offering the highest level of protection against extreme weather conditions, especially in Zone 4 wind zones. This certification demonstrates our commitment to safety and durability, providing peace of mind for customers in hurricane-prone areas like Florida.
ISO 14001
OKNOPLAST proudly holds the international ISO 14001 certification, demonstrating our commitment to sustainable development and environmental protection. This certification validates our efforts to minimize environmental impact, making OKNOPLAST a leader in eco-friendly practices.
NFRC (National Fenestration Rating Council)
With NFRC certification, our windows undergo comprehensive testing to determine their thermal performance, ensuring they meet or exceed industry standards for energy efficiency. This certification empowers customers to make informed decisions about their window investments, choosing products that prioritize comfort and sustainability.
PHIUS (Passive House Institute US)
Our PHIUS-certified windows are meticulously designed and tested to meet the energy efficiency requirements of Passive House construction. This demonstrates our dedication to sustainability and innovation, providing customers with windows that not only conserve energy but also contribute to healthier and more comfortable living environments.
CEKAL
CEKAL certification ensures that our insulating glass units meet strict standards for thermal and acoustic performance, durability, and safety. This recognition confirms our commitment to delivering high-quality glazing solutions that enhance energy efficiency and indoor comfort—backed by rigorous testing and quality assurance.
Sustainability at OKNOPLAST
Discover how we help you lower your energy use and environmental impact without compromise.
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Got questions? We’ve got answers
Find clear, helpful info on installation, features, maintenance, and more.
Go to FAQWe’re here to support you at every stage
Request a quote, consult your project, or simply ask us anything—we’re ready to help make your vision a reality.
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