W540 is the upgrading of the AL510 series. New profiles and configurations make W540 a complete system with very good features.

Particularly emphasizing on design, resistance, and functionality, the system has been principally designed to facilitate the construction procedure and reduce the installation time. W540 can be realized with all types of inward and outward opening windows and doors, with an extensive choice of different mechanisms.

These characteristics place W540 among the most flexible, affordable non-insulated systems of the market. The numerous combinations of elements and the perfect match with the sliding frames of the SL230 system, make W540 extremely suitable for all types of building concepts.