About Us

GüngörPen, which started its operations in 2000 in Kocaeli / Değirmendere, has been among the leading companies in the sector for 25 years with its quality-driven and innovative approach.

In 2022, the company made a significant investment by relocating to its new headquarters in Başiskele / Kocaeli, which features the largest showroom area in the Marmara Region. By adding industry-leading brands such as Winsa and Albert Genau to its portfolio, it has expanded its operations. Offering a wide product range in PVC window/door systems, shutters/roller shutters, and aluminum systems — including glass balconies, guillotine systems, folding glass balconies, sliding glass balconies, winter gardens, and pergolas — the company continues to strengthen its leading position in the region.

GüngörPen operates on a total area of 2,100 square meters, consisting of 1,600 square meters of indoor space and 500 square meters of outdoor space. With its modern four-story building, it aims to provide the best experience to its customers. The company serves a wide geographical area, primarily Kocaeli, Istanbul, Adapazarı, as well as the Aegean and Mediterranean regions.

Successfully completing an average of 200–250 residential and commercial projects each year with great pride, GüngörPen serves a broad customer base ranging from individual clients to large-scale construction projects. With its strong emphasis on both product and workmanship quality, and its core mission of customer satisfaction, the company creates a significant difference in the industry.

By offering a 2-year warranty on all its products, GüngörPen certifies its reliability and quality in the sector, while providing tailored solutions to each customer both before and after the project.