of the first color coat that was applied in the first spray booth 11 at this point in the painting cycle the first color coat is not yet completely dry and the second color coat is applied wet on wet upon expiration of the cycle time in the second spray booth 21 the conveyor moves the product to be painted to the second flash off tunnel 22 where the solvents from the newly applied paint are allowed to flash off after the cycle time in the second flash off tunnel 22 has expired the painted product is then conveyed into the third spray booth 31 in the production facility incorporating this invention a clear polyurethane coating is applied in the third spray booth over the color coatings that have been previously applied in the first and second spray booths after the cycle time in the third spray booth 31 has expired the painted product is then conveyed into the third flash off tunnel 32 where the solvents from the just applied paint are allowed to flash off in the production facility incorporating this invention the third flash off tunnel 32 is longer than the first and second flash off tunnels 12 and 22 the relative lengths of the flash off tunnels is illustrated in fig4 upon expiration.