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Present grids of stellar atmosphere models are the workhorses in interpretingstellar observations, and determining their fundamental parameters. Thesemodels rely on greatly simplified models of convection, however, lending lesspredictive power to such models of late type stars.  We present a grid of improved and more reliable stellar atmosphere models oflate type stars, based on deep, 3D, convective, stellar atmosphere simulations.This grid is to be used in general for interpreting observations, and improvestellar and asteroseismic modeling.  We solve the Navier Stokes equations in 3D and concurrent with the radiativetransfer equation, for a range of atmospheric parameters, covering most ofstellar evolution with convection at the surface. We emphasize use of the bestavailable atomic physics for quantitative predictions and comparisons withobservations.  We present granulation size, convective expansion of the acoustic cavity,asymptotic adiabat, as function of atmospheric parameters. These and otherresults are also available in electronic form.

A Grid of 3D Stellar Atmosphere Models of Solar Metallicity: I. General Properties, Granulation and Atmospheric Expansion