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About DUO-CORP

Delivering a diverse range of high-quality windows, from basement to slider and Aristoclass series, offering modern functionality.
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Company Profile
Duo-Corp. is a family-owned and operated company specializing in the manufacturing of vinyl basement windows and egress windows. Our focus is on providing solutions for new construction and replacement applications, catering to both concrete block and poured concrete foundations. In addition to our core product line, which includes vinyl utility and barn sash windows, we offer the Place-N-Pour (PNP) automatic foundation vent as part of our poured foundation product offerings. Proudly based in the U.S.A., Duo-Corp. is committed to delivering quality products to meet the diverse needs of our customers.
Duo-Corp offers a diverse range of high-quality products, including basement windows designed for both new construction and replacement applications. Our utility windows are versatile and suitable for various building configurations. The slider basement windows provide convenient access to fresh air and natural light. The hopper basement windows, part of our aristo class series, offer a stylish and functional solution for enhancing the aesthetic appeal of your space. Additionally, our renaissance barn sash windows combine classic design with modern functionality, providing a touch of elegance to any setting. With a commitment to quality and innovation, Duo-Corp ensures that our products meet the highest standards in the industry.
Services Beyond Product Delivery
Duo-Corp emphasizes delivering top-notch services extending beyond product provision, providing expert guidance throughout the customer journey for a seamless and informative experience from inquiries to post-purchase support.
Personalized Support and Care
Seamless support and service encompass assistance in product selection, installation recommendations, and maintenance guidance. Recognizing each customer's unique requirements, the goal is to offer tailored solutions effectively. Duo-Corp's dedication to excellence in service extends to its offerings on DK Hardware, enhancing spaces with reliable, well-crafted, and versatile window solutions designed for various needs.