Aluminum slot profile with general dimensions 40 mm x 40 mm with 8 mm slot and 6.8 mm holes. This hole is ideal for self-tapping screws of dimension 8. The profile is characterized have a maximum internal slot distance of 20.5 mm suitable for use with all accessories of the 40/80 series. Within the existing 40x40 profiles on the market, our profile offers excellent mechanical properties (Moment of Inertia x e y = 9.7 cm4). It is a profile used for the construction of medium-sized mechanical structures, machine benches, CNCs, protection fences, etc.