Door closure system for opening and closing a door, - wherein the door closure system has a first door handle unit with a first door handle that is pivotable about a pivot axis and with a covering cap oriented transversely to the pivot axis, - wherein the door closure system has a second door handle unit which is identical to or differs from the first door handle unit and which has a second door handle, - wherein the door closure system has a first mounting plate oriented transversely to the pivot axis and a second mounting plate oriented transversely to the pivot axis, - wherein the first mounting plate and the second mounting plate are connected to each other in an axially fixed and rotationally fixed manner, and - wherein the first door handle unit is axially fixedly arranged on the first mounting plate and the second door handle unit is axially fixedly arranged on the second door handle unit, - wherein the covering cap is connected to the first mounting plate in an axially fixed manner and to the first door handle in an axially fixed and rotatable manner, and - wherein the covering cap is only axially detachable together with the first door handle from the first mounting plate, characterised in that - the covering cap has a thread running around the pivot axis and the first mounting plate has a mating thread running around the pivot axis, and - the covering cap and the first mounting plate are screwed together, and - the covering cap is formed in one piece and in the shape of a pot and covers the mounting plate from the outside on a side which faces the first door handle and which is oriented transversely to the pivot axis and on a side running around the pivot axis. - wherein the door closure system has a first door handle unit with a first door handle that is pivotable about a pivot axis and with a covering cap oriented transversely to the pivot axis, - wherein the door closure system has a second door handle unit which is identical to or differs from the first door handle unit and which has a second door handle, - wherein the door closure system has a first mounting plate oriented transversely to the pivot axis and a second mounting plate oriented transversely to the pivot axis, - wherein the first mounting plate and the second mounting plate are connected to each other in an axially fixed and rotationally fixed manner, and - wherein the first door handle unit is axially fixedly arranged on the first mounting plate and the second door handle unit is axially fixedly arranged on the second door handle unit, - wherein the covering cap is connected to the first mounting plate in an axially fixed manner and to the first door handle in an axially fixed and rotatable manner, and - wherein the covering cap is only axially detachable together with the first door handle from the first mounting plate, characterised in that - the covering cap has a thread running around the pivot axis and the first mounting plate has a mating thread running around the pivot axis, and - the covering cap and the first mounting plate are screwed together, and - the covering cap is formed in one piece and in the shape of a pot and covers the mounting plate from the outside on a side which faces the first door handle and which is oriented transversely to the pivot axis and on a side running around the pivot axis.