The present invention relates to a shredder (1) for comminuting organic material to form shreds, comprising a shredding chamber (2) provided with rotatable cutting means (3), wherein the shredder (1) furthermore comprises a fan chamber (6) containing a fan (7) which is connected to the shredding chamber (2) via a passage (4), wherein the fan (7) is configured to generate a suction force which will suck the shreds out of the shredding chamber via the passage and will remove these from the fan chamber (6) via a discharge opening (8). In contrast to the known shredders, the shredder (1) according to the invention no longer has a discharge opening in the shredding chamber and, in addition, no longer requires a calibration grille.
