Two new groups of aluminium profiles were added recently to the already successful product lines of aluset. The opening system C 520 and the thermal broken opening system T 680 now feature cross-sections for the manufacturing of opening window frames and window leaves with a perimetric locking mechanism. After watching carefully market trends, aluset designed these profiles in way that enables them to work with any locking mechanism, allowing the professional manufacturer to make the best possible choice according to his own special needs. There are many advantages in constructions that feature perimetric locking mechanisms. Someone can adjust the window leaf internally – externally and on the right - left. As a result, frames function perfectly, even if there is a divergence in cutting dimensions. At the same time, we can place two handles which particularly means that the two window leaves in conjunction with the middle adjoining profile can tilt, extending with a unique way the functionality of the frame. Profiles for perimetric locking mechanisms, as well as for all our products, are produced with the most modern equipment and according to the strictest specifications in our new installations in Megara of Attica. Our profiles can be dyed, apart from white, in the full range of RAL colours, as well as in timber colours with exceptional quality, according to the specifications of the QUALICOAT Seaside Class standard.