Abstract: A dryer, especially for wood, has at least two drying chambers separated from each other by at least one partition wall, at least one fan in each of the drying chambers, and at least two connection passages for the reciprocal connection of the drying chambers. Each of the connection passages can be constricted or blocked off by blocking devices. To properly convey drying agent to where it is to be used, a fan is mounted in at least one of the drying chambers connected together by the connection passages, is associated with one connection passage, and is arranged directly adjacent to the connection passage. The blocking device includes a flap on one side only. When the flap is closed, it forms a part of the side wall of one connection passage. The flap is arranged directly in front of and in the conveying direction of the fan, such that, when it is open, it forms a deflector for the drying agent conveyed by the fan.