This 40×80 T Slot Aluminium Extrusion Profile made from high-quality Aluminium Alloy 6063.
The dimensions are as per European Standard and the structural cross-section thickness is minimum of 1.5 mm.
The profile can be used for structural elements in automation machinery, machine bases & frames, 3d printers. 
Note: There may be dimensional tolerance of ± 2 mm in length.