Kupil Fenster & Türen GmbH is a regional manufacturer based in Ehingen an der Donau, serving customers across Baden-Württemberg from locations in Ehingen, Ravensburg and Stuttgart. The company produces windows, doors and façade systems for new-build projects and renovations, including residential and office buildings. Its product range includes energy-efficient plastic and aluminium windows, aluminium and plastic entrance doors, and lift-and-slide doors for terraces and balconies. For façades, Kupil offers aluminium post-and-beam and Panorama-Design systems.

Customers can choose from a range of design and equipment options to tailor products to their preferences and building requirements. Kupil also provides individual, needs-focused advice to help customers select suitable solutions, along with services for requesting quotations, booking appointments and submitting customer-service inquiries. The company presents completed projects as references, offering examples of its products in different building contexts. With an emphasis on quality, energy efficiency and personalised service, Kupil supports customers planning construction or upgrading existing properties. Its portfolio is available to explore online, with in-person consultation available through its regional branches.