The grating at near grazing incidence used for pulsed dye lasers has been further improved. Two problems has been solved of inserting the intracavity etalon and of selecting the optimal blazed grating and its orders at grazing incidence.A new version has been presented in which the grating and the etalon are arranged symmetrically.Single-mode operation and the output linewidth of the order of a few hundred MHz(below 0.006A)can be obtained.