Abstract: An air distribution system for providing rinse air to a gas cleaner is provided, which includes a filter housing, a holding plate wherein holes are arranged in concentric circles for holding filter bags or filter elements in the filter housing, filter bags or filter elements, rinse air supply means, and an air distribution device for distributing rinse air. In the system, a tube (6) is arranged rotatable in a rotatable distributor body (109) in the air distribution device (101), which distributor body (109) are connected to tubes (7), and which distributor body (109) includes rotating means (4, 5, 104), and when the distributor body (109) is rotated, tubes (7) are moved from a position above one hole (110) in the holding plate (111) to another hole (110) in the holding plate.