UAB “DW Systems” is the member of the group of companies “Kalvasta Group” responsible for the production of plastic windows, doors, facades, sliding and folding systems and other plastic structures. Having an extensive work experience, the company is well aware that every detail is important in construction, so it strives to supply the highest quality certified products.

UAB “DW Systems” highly values its customers and offers the best solutions for all customer wishes. The most suitable solutions for window and door systems are individually selected from an extremely wide range. The company offers the durable and long-lasting different types of glass packages: heat retaining, limiting solar energy conduction, reflecting the sun, noise suppressing, etc.

The modern plastic window profiles “Kömmerling” and “Gealan” and strong, quality aluminium door and window profile systems “Reynaers” and “Aluprof“ are offered to the customers. “DW Systems” uses the fittings of reliable German manufacturer “Siegenia” to guarantee the safety and durability of windows and doors.

“DW Systems” carries out strict production control. The premium structures are selected for the supply. The company’s experts not only design and manufacture products of exceptional quality, but also offer professional construction and system installation services.

You will get the full package of services by selecting the company “DW Systems”.

Design of modern, durable and robust systems and structures.

Manufacture of plastic windows, doors and sliding or folding systems.

Product delivery.

Installation of systems, doors and windows. 


We listen to the wishes of each customer, so we individually select different glass packages: heat retaining, reflecting the sun, noise suppressing, etc. The range of glass from our reliable partners is extremely wide, so we believe that every customer will find the most suitable and best option for their home. To guarantee the safety and durability of the windows and doors, „DW Systems” uses the fittings of reliable German manufacturer “Siegenia“. Our company offers services from design to the installation of the products, so you can be sure that your window and door systems will be taken care of by real professionals in their field. Do not be afraid to entrust your dreams to us – “DW Systems” team that guarantees the quality and professionalism.