Legend PVC Window System is designed as 6 rooms according to 80 mm seating width, In the design of the system, especially by considering the high performance criteria, the profiles are formed by bringing together the most suitable building blocks, The design process, as well as the profile, as the window performance, insulation (heat and sound), strength, sealing properties are evaluated as holistic, Profiles in the system are produced according to EN12608-1 standard,