Cleartone Nippon Paint Cleartone Exterior PU Wood Finish is a clear two pack polyurethane finish which protects the wood and maintains its natural beauty. It comes in gloss and matt finishes for all kinds of exterior wood and veneers. Cleartoneâ€™s high paint film integrity ensures increased adhesion to surface and no cracks under any conditions. Its unique UV resistant formulation ensures that the film stays clear making the wood rain look naturally beautiful for long. It provides complete protection against any algal and fungal attack.