Abstract: A visor device for spacing a temporary protective cover over a painting canvas mounted on a rear frame of perimeter members. The visor device consists of a unitary semi-rigid strip of organic plastics material of uniform cross-sectional contour having a clip portion and a visor portion extending from the clip portion. The clip portion is removably fastenable to a rear frame perimeter member in a manner such that only the visor portion projects forwardly and in spaced relationship over edge areas of the front surface of the painting canvas. The composite assembly of a painting canvas with the visor device fastened to perimeter members and a protective cover fastened over two or more visor portions provides complete protection for a painting transported while the painting is undergoing drying.