Abstract: A device for drying timber in the form of elongated wood pieces, such as boards or planks, comprises one or more drying rooms and means for introducing dry in-take air into the drying room and evacuate more moist exhaust air therefrom. Several sets of spacing elements are arranged in an individual drying room, said elements being spaced from each other and delimiting a plurality of separate compartments in the drying room. The spacing elements are movable, for instance rotatable, so as to be adjustable between a first position, in which the width of the individual compartment is larger than the thickness of the wood pieces to enable unobstructed in-feed thereof into the compartment, and a second position, in which the width of the compartment has been reduced so far that the spacing elements in two adjacent sets contact and clamp the wood pieces so as to counteract deformation thereof during drying.