Abstract: A device for staining or painting planks has an enclosure and a plank receiver for guiding a plank into the enclosure. At least one pair of vertical rollers are provided for engaging the plank received in the plank receiver. A lever may be positioned to contact the plank upon exit from the plank receiver. A linkage bar is affixed to the lever and to vertical rollers. Moving the lever by insertion of the plank moves the vertical rollers in preparation for receiving a leading edge of the plank. The vertical rollers are mounted on swing arms for facilitating adjustment of a space between the left vertical rollers and the right vertical rollers for accommodating planks of various thicknesses. Vertical sprayers are pivotally mounted and in communication with the swing arms for pivoting with the vertical rollers for maintaining a constant distance between the vertical rollers and the left vertical sprayer.