Peak temperature of the neutral fluid and the shock width (in cm), to T = 100 K in the cooling flow, for the grid of models without (broken lines) and with (full lines) grain-grain processing. The preshock density is 10⁵ cm^-3, and the shock velocities are 20 km s^-1 (blue), 30 km s^-1 (green) and 40 km s^-1 (red) for various values of the magnetic field parameter, b, in .