Angles

sides Thickness
20Χ20 3 - 4 mm
25Χ25 3 - 4 mm
30Χ30 3 - 4 mm
35Χ35      4 mm
40Χ40 4 - 5 mm
50Χ50 5 - 6  mm
60Χ60      6 mm
80Χ80      8 mm