The PPHU DELTA company has existed since 1991 and is a manufacturer of the highest quality lead-free PVC joinery in the greenline system, aluminum joinery. The production plant is located in Augustów, where the production of PVC joinery takes place on several state-of-the-art production lines with a daily production capacity of several hundred windows and doors.

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For the production of DELTA windows and doors we use only the highest quality components supplied by the most renowned world companies: original German lead-free greenline PVC profiles KÖMMERLING, TROCAL and KBE, German UNI-JET GU fittings, Pilkington, Saint Gobain, Guardian, Glaverbel insulating glass.

Production is carried out by highly qualified employees who have been working in the company for many years.

The manufactured joinery undergoes very detailed quality control. All this together guarantees the highest quality of joinery delivered to our customers.

In addition, all window and door systems manufactured by Delta undergo systematic Laboratory Tests for compliance with European Standards EN and always obtain test results significantly exceeding the applicable European Standards EN. A significant number of window and door manufacturers do not conduct tests of their products for compliance with the requirements of European Standards EN and only present customers with certificates for individual window components, e.g. certificates for glass or fittings, which does not guarantee high quality windows because even good components can be used to produce a low-quality product. In addition, there are cases of dishonest manufacturers who inform that, for example, they use "X" fittings in their windows, while in reality, in one window the customer will receive a compilation of fittings from different, sometimes completely unknown garage manufacturers. A window or door made in this way cannot of course function properly, which the customer unfortunately finds out about only after a certain period of use. By combining our knowledge and experience with the highest quality materials used in production, our windows and doors are:

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• healthiest – unique greenline technology allows to obtain lead-free windows, and additionally anti-allergic (free of allergens in the form of paints, varnishes, impregnating agents). Greenline products are made of PVC with lead-free stabilizers. Ecological, environmentally friendly zinc-calcium stabilizer replaced harmful lead. But greenline is more than just replacing stabilizers. Our innovative products achieve not only a better ecological balance, but also increased resistance to weather conditions, longer durability of silk gloss and better insulation properties.

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• the most durable – the use of original German profiles with increased stiffness and original German seals factory-moulded into the profile allowed us to obtain windows with a guaranteed service life of up to 30 years.

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• the warmest - a unique composition of tight 7, 6 and 5-chamber profiles and glass with the lowest heat transfer coefficient U=0.5 as standard in the system Kommerling 88 7K, Kommerling 76 MD, Trocal 76 AD, provides approximately 40% additional heat savings compared to currently used 5-chamber systems.

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The highest quality of our windows and doors is confirmed by many certificates. As one of the few manufacturers in this industry, we have been using the Quality Management System for many years, confirmed by the ISO 9001:2000 Certificate.

The high quality of our products allows us to successfully export to the most demanding market in Europe – the German market and to other European Union countries.

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We provide our clients with free measurement, valuation and professional assembly, performed by experienced assembly teams. Our employees will provide you with professional technical advice in the selection of PVC joinery for your individual needs. We would like you to join the group of our satisfied customers who have chosen the highest quality.

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Trust our experience!