A door that is adapted to separating a first environment with a first pressure from a second environment with a second pressure, comprising: a door frame that comprises: a door stop that protrudes from the door frame, and a roller that protrudes from the door frame; a door leaf that is adapted to closing the door frame; and an actuating system that is mounted to the door leaf and comprises: a latch element that is adapted to engaging with the door stop to latch the door leaf, wherein the latch element is pushed against the door stop when the door is in a latched state and the first pressure is greater than the second pressure; and an inward-moving drive system that comprises: a puller shaft that is drivable to rotate around an associated puller shaft rotation axis, and a puller that is non-rotatably attached to the puller shaft and comprises: a guide rail that moves along the roller during a rotation of the puller in response to a rotation of the puller shaft around the puller shaft rotation axis such that the puller moves the door leaf in direction of the first environment thereby disengaging the latch element from the door stop and enabling a transition of the door from the latched to an unlatched state, and a stopper nose that is pushed against the roller when the door is in the latched state and the first pressure is smaller than or equal to the second pressure. a door frame that comprises: a door stop that protrudes from the door frame, and a roller that protrudes from the door frame; a door stop that protrudes from the door frame, and a roller that protrudes from the door frame; a door leaf that is adapted to closing the door frame; and an actuating system that is mounted to the door leaf and comprises: a latch element that is adapted to engaging with the door stop to latch the door leaf, wherein the latch element is pushed against the door stop when the door is in a latched state and the first pressure is greater than the second pressure; and an inward-moving drive system that comprises: a puller shaft that is drivable to rotate around an associated puller shaft rotation axis, and a puller that is non-rotatably attached to the puller shaft and comprises: a guide rail that moves along the roller during a rotation of the puller in response to a rotation of the puller shaft around the puller shaft rotation axis such that the puller moves the door leaf in direction of the first environment thereby disengaging the latch element from the door stop and enabling a transition of the door from the latched to an unlatched state, and a stopper nose that is pushed against the roller when the door is in the latched state and the first pressure is smaller than or equal to the second pressure. a latch element that is adapted to engaging with the door stop to latch the door leaf, wherein the latch element is pushed against the door stop when the door is in a latched state and the first pressure is greater than the second pressure; and an inward-moving drive system that comprises: a puller shaft that is drivable to rotate around an associated puller shaft rotation axis, and a puller that is non-rotatably attached to the puller shaft and comprises: a guide rail that moves along the roller during a rotation of the puller in response to a rotation of the puller shaft around the puller shaft rotation axis such that the puller moves the door leaf in direction of the first environment thereby disengaging the latch element from the door stop and enabling a transition of the door from the latched to an unlatched state, and a stopper nose that is pushed against the roller when the door is in the latched state and the first pressure is smaller than or equal to the second pressure. a puller shaft that is drivable to rotate around an associated puller shaft rotation axis, and a puller that is non-rotatably attached to the puller shaft and comprises: a guide rail that moves along the roller during a rotation of the puller in response to a rotation of the puller shaft around the puller shaft rotation axis such that the puller moves the door leaf in direction of the first environment thereby disengaging the latch element from the door stop and enabling a transition of the door from the latched to an unlatched state, and a stopper nose that is pushed against the roller when the door is in the latched state and the first pressure is smaller than or equal to the second pressure. a guide rail that moves along the roller during a rotation of the puller in response to a rotation of the puller shaft around the puller shaft rotation axis such that the puller moves the door leaf in direction of the first environment thereby disengaging the latch element from the door stop and enabling a transition of the door from the latched to an unlatched state, and a stopper nose that is pushed against the roller when the door is in the latched state and the first pressure is smaller than or equal to the second pressure.