A fiber optic distribution device, comprising: a housing defining an interior space of the fiber optic distribution device, wherein at least one fiber optic cable can be inserted from an exterior into the interior space of the housing and passed out from the interior space of the housing in the exterior; and at least one modular fiber optic management unit mounted in the housing, wherein the or each modular fiber optic management unit comprises several modules stacked above each other, namely at least a cable entry module for inserting at least one incoming fiber optic cable from the interior space of the housing into the respective fiber optic management unit and for passing out least one outgoing fiber optic cable from the respective fiber optic management unit in the interior space of the housing, at least one splice module comprising several splice trays for handling splice connections between fibers of the or each incoming fiber optic cable and fibers of fiber optic pigtails or fibers of the or each outgoing fiber optic cable, wherein the or each fiber optic management unit is mounted in the housing through mounting rails in such a way that the respective fiber optic management unit having a first orientation in an upright position of the same can be horizontally pulled out from the interior space of the housing or horizontally pushed into the interior space of the housing in said first orientation, the respective fiber optic management unit being pulled out from the interior space of the housing can be pivoted around a vertical rotation axis from said first orientation into a second orientation and vice versa from said second orientation into the first orientation while maintaining the upright position of the same. a housing defining an interior space of the fiber optic distribution device, wherein at least one fiber optic cable can be inserted from an exterior into the interior space of the housing and passed out from the interior space of the housing in the exterior; and at least one modular fiber optic management unit mounted in the housing, wherein the or each modular fiber optic management unit comprises several modules stacked above each other, namely at least a cable entry module for inserting at least one incoming fiber optic cable from the interior space of the housing into the respective fiber optic management unit and for passing out least one outgoing fiber optic cable from the respective fiber optic management unit in the interior space of the housing, at least one splice module comprising several splice trays for handling splice connections between fibers of the or each incoming fiber optic cable and fibers of fiber optic pigtails or fibers of the or each outgoing fiber optic cable, a cable entry module for inserting at least one incoming fiber optic cable from the interior space of the housing into the respective fiber optic management unit and for passing out least one outgoing fiber optic cable from the respective fiber optic management unit in the interior space of the housing, at least one splice module comprising several splice trays for handling splice connections between fibers of the or each incoming fiber optic cable and fibers of fiber optic pigtails or fibers of the or each outgoing fiber optic cable, wherein the or each fiber optic management unit is mounted in the housing through mounting rails in such a way that the respective fiber optic management unit having a first orientation in an upright position of the same can be horizontally pulled out from the interior space of the housing or horizontally pushed into the interior space of the housing in said first orientation, the respective fiber optic management unit being pulled out from the interior space of the housing can be pivoted around a vertical rotation axis from said first orientation into a second orientation and vice versa from said second orientation into the first orientation while maintaining the upright position of the same. the respective fiber optic management unit having a first orientation in an upright position of the same can be horizontally pulled out from the interior space of the housing or horizontally pushed into the interior space of the housing in said first orientation, the respective fiber optic management unit being pulled out from the interior space of the housing can be pivoted around a vertical rotation axis from said first orientation into a second orientation and vice versa from said second orientation into the first orientation while maintaining the upright position of the same.