The high speed folding door PIC 75 is the version with front engine of the PIC series and constitutes the optimal solution for the automatic opening and closing of rooms of large dimensions, which are subject to heavy traffic. Thanks to its speed of opening / closing and high sealing, PIC 75 limits the thermal dispersion, with a consequent improvement of the environmental working conditions and a considerable saving on energy costs. The vertical movement of the curtain is manufactured by lifting straps which progressively collect the sectors in the upper part of the door.