Model for the ISM clouds present in the LS III +46 11 and LS III +46 12 sightlines. Cloud σ₁ is of low density, not associated with the cluster, and affects both sightlines similarly. Cloud σ₂ is also of low density, is the skin of the cloud associated with the cluster, and is longer along the LS III +46 12 sightline. Cloud ζ is of high density, is the core of the cloud associated with the cluster, and affects LS III +46 11 exclusively (or, at least, to a much larger degree than LS III +46 12).