According to the invention, the vertical modular mount for a handling door (1) includes an upper platen (18) connected to a horizontal frame (4) and more particularly to a side flange (19), a lower platen (20) connected to the ground, a central web (21) connecting the upper (18) and lower (20) platens together, a cloth (23) arranged around the upper (18) and lower (20) platens in order to define an envelope (24) on the entire height of the mount (2, 3), and a guiding device (15) defining a slide for the movement of the flexible screen (6) characterised in that each member (21, 23, 15) formingthe mounts (2, 3) of the handling door (1) are arranged so as to impart a high resilience to the latter, i.e. a high resistance to shocks due to the elastic deformation of each of said members.